Vigilante, adventurer, S.H.I.E.L.D. trainee, high school student,Superheroine
New York City
Petra Parker is a Caucasian teenage girl of average height with a lean frame, sporting muscular and well-defined build, due to the radioactive spider bite.
Unmasked, she resembles Peter but is female and has brown hair and blue eyes.
Her costume is based on an arachnid, with the spider suit's primary colors being red and blue, with a silhouette of a spider on the chest area and a large red spider on the back. The red has a pattern that resembles that of a spider web, with the center of the web being on the topside of his nose. The red and webs only go to the shoulders on the costume. The eyes on the mask are white with a bold black outline.
Much like her male counterpart, Peter Parker, Petra is very confident in her abilities, and constantly delivers witty quips and jokes. She is very talkative, ranting on and on without letting Peter ask a question.
While she enjoys her job, she is annoyed by the criticism she gets from J. Joanne Jameson until Peter helps her overcome it. She also returned the favor to him, after he was gloom about the situation with Goblin and Electro.
Although her overconfidence tends to get her into trouble, like when she underestimates Peter's version of the Goblin until seeing how dangerous he truly is. She is also very sexist, calling Peter a "boy" in a negative tone, although this may be a result of her native universe, which may be dominated by women. However, after her battle with the male Goblin, she realized that she underestimated him.
After she finds out Peter was alternate version of her and had a life similar to hers, she was surprised by this but accepting of him. Once Peter saves her life, she was grateful and was happy that there was someone who understood her and even called him a friend even motivating him to not give up in a fight with Electro. She also became amazed by the fact that there were other worlds, even if her counterparts were males. Petra even befriended the other spidermen from other worlds and worked with them to save the city.
Season 3: Web-Warriors
The Spider-Verse: Part 1
When Green Goblin uses the Siege Perilous with Electro as it's power source to open gateways to universes parallel to their own, Spider-Man follows his arch-nemesis to the 2099 Universe before heading to the Gender Flipped Universe. As Spider-Man runs out of web-fluid, he is saved by Spider-Girl from crashing. He wakes up, he thinks he's home until he is surprised to find a female version of J. Jonah Jameson named J. Joanne Jameson, who like his J. Jonah Jameson, slanders superheroes. Spider-Girl then calls out to him and uses her web to pull him back into the alleyway. Believing that he is somebody else, she chastises him for thinking that he can shoot webs, that it was dangerous and jokes about him nearly becoming street pizza. Spider-Man gets confused by this until Spider-Girl reveals that she's sick of rescuing faker and wannabes and accuses him of putting her city in danger and that it's always her job to fix it. She also believes that he is a boy in a costume pretending to be her and jokes about seeing everything. Spider-Man then realizes that she is a female version of him with her insulting him a a "good genius" before web-sling away. Spider-Man follows her onto a rooftop and tries to explain that he is her counterpart and jokes about being convinced that he's saying it. Spider-Girl refuses to believe it by telling him that he doesn't know how it works and reveals that "boys" can't be her ego and that he'll just hurt himself. Spider-Man tries to tell her about the Siege Perilous but Spider-Girl still refuses to believe him, still thinking he is a "cosplay" and to let the "heroes" do their job. Spider-Man uses his web to stop her leaving, trying to tell her that she's in danger but Spider-Girl decides to make him not miss with the "big girls" and shoots web in the eyes of his mask before kicking and webbing him to a water tower. She then gets a call on her communicator and tells Nicole Fury that she'll be late because she has to deal with something "minor" before ending the contact. Spider-Man breaks free and they are interrupted by J. Joanne Jameson blaming everything on Spider-Girl. Spider-Girl sadly asks why she even bothers because she saves the city but J. Joanne Jameson keeps blaming her. Spider-Man reasons that she shouldn't let J. Joanne Jameson get to her, especially not now because she's in a lot of danger with Spider-Girl jokingly asking if it's Thursday. He tries to tell her about coming to save her but she takes this as a joke and asks how a "boy" is going to save her. Spider-Man properly introduces himself before revealing that he knows about "With great power, comes great responsibility" which somewhat convinces Spider-Girl. She then asks him if he is really her counterpart from another world and he confirms it. They both take their masks off while revealing themselves as "Peter Parker" and "Petra Parker". They both find it awkward at their similar appearance, before Spider-Man reveals that they don't have much time because his Green Goblin is after her and Spider-Girl reveals that her Green Goblin is one of her worst enemies and if his Green Goblin is anything like her Green Goblin, then she knows where to find them.
After heading for the Oscorp that is owned by Norma Osborn, Spider-Man tells her that his Green Goblin is no joke but Spider-Girl believes that he will be easy if he is a male version of her Green Goblin. They are then confronted by their respective Green Goblins with Spider-Man pointing out that the female Green Goblin isn't a goblin and that his Green Goblin is a goblin. Spider-Girl is confused about her counterpart's Green Goblin, frantically asking on him being a man or a monster before Green Goblin sardonically comments about why he can't be both. He and his female counterpart proceed to throw pumpkin bombs at them but they dodge them. Despite Spider-Man trying to warn her of his Green Goblin's powers, Spider-Girl tells him to take care of her Green Goblin while she deals with his Green Goblin. Spider-Girl manages to kick him off his glider but he uses a gadget to tie her up. He then uses the bat gadget to collect her DNA. The female Green Goblin reminds him that he got what he wanted and she should get what she wanted. He then gives her a vial of goblin serum from his universe. Spider-Girl realizes that she underestimated him while Spider-Man frees her while they both wonder what her Green Goblin meant about getting what she wanted which worries Spider-Man. The female Green Goblin then turns into the true female version of her Green Goblin counterpart. She then decides to destroy her arch-nemesis and her "sidekick" as a bonus which insults Spider-Man. She then shocks him down until Spider-Girl attacks her. The female Green Goblin throws bats at her which she webs up but they cut free but Spider-Man saves her before they explode. Spider-Girl believes that she is unstoppable but Spider-Man assures her that she's still the same Green Goblin and that she knows her attacks. The female Green Goblin fires missiles at them but they dodge with Spider-Man shooting an electric gadget which shocks her and gives Spider-Girl the advantage to hit her. While Spider-Man's Green Goblin escapes to the next dimension, the female Green Goblin continues chasing Spider-Man and Girl by throwing pumpkin bombs at them which makes them head to Washington Bridge. The female Green Goblin throws another pumpkin bomb but Spider-Man throws it away. Spider-Girl tells him to distract her while she goes for the big knockout which Spider-Man agrees with. The female Green Goblin shoots electric blasts at him but he dodges and taunts her about not being close. This gives Spider-Girl time to shoot her off her glider and she and her counterpart webs her up. Spider-Girl taunts her about getting all the tech and power upgrades she wants but she'll never beat her and her "amazing" friend with Spider-Man glad that he wasn't called a sidekick.
The female Green Goblin tells Spider-Girl that she's doomed and breaks free before shooting an electric blast at her, which causes her to fall but Spider-Man defeats her Green Goblin. While falling, Spider-Girl finds that she has run out of web fluid but Spider-Man saves her and brings her back onto the bridge. Spider-Girl is surprised that she got saved by a "boy" and that she will never live it down. Spider-Man tells her that it doesn't bother him anymore and reveals that her Green Goblin is down but his Green Goblin is still on the loose. Spider-Girl states her wish for him to stay and help but he tells her that she doesn't, except for the falling off the bridge moment, It may be hard being Spidey but she's in control and that she helped defeat her Green Goblin. Spider-Girl is happy about it feeling good and finally admits that it feels good knowing that there's another version of herself fighting everyday which makes her wanting to keep fighting too. Spider-Man admits it as well and thanks her before he leaves for the next universe.
The Spider-Verse: Part 4
Later, Spider-Man, Green Goblin and Electro return to their universe and back to the sunken S.H.I.E.L.D. Helicarrier. However, it is revealed that Green Goblin had collected Spider-Man DNA to enhance his powers to make himself unbeatable. However, this turns him into an arachnid-like goblin monster and renames himself as Spider-Goblin. Realizing that he is unable to beat his arch-nemesis, Spider-Man uses the Siege Perilous through Electro to open a portal that summons all of the alternate Spider-Men to his universe, forming the "Web-Warriors" (consisting himself, Spider-Man 2099, Spider-Girl, Spider-Man Noir, Spider-Ham, Spyder-Knight and the Ultimate Spider-Man). Spider-Ham jokes about an explanation with the Ultimate Spider-Man joking about the explanation being the best day ever. Spider-Goblin believes that there can only be one spider and that he is it but Spider-Man kicks him and thanks Electro. Spider-Goblin angrily threatens to kill Electro for his betrayal but Spider-Man saves him and webs up Spider-Goblin’s face. Spider-Man greets his counterparts and guesses that they know why he called them and Spider-Girl reveals that they know because they have to stop Spider-Goblin. Spider-Goblin rips the web off and spits acid spit at them all but they all dodge. Spyder-Knight points out that Green Goblin was monstrous before but has now become a beast beyond imagining. They prepare to fight Spider-Goblin with Spider-Man pointing out to not let him tag them with his web and acid spit. They battle Spider-Goblin but he beats them all while revealing that no matter how many of them there are; he is bigger, faster and stronger. At one point, the Ultimate Spider-Man and Spider-Girl use their webs on his extra spider arms in an attempt to tie around im but bump into each other with both telling the other to watch where they're going. Spider-Goblin then starts beating Spider-Man down but the Web-Warriors prevent him with Spider-Man Noir pointing that if they can't beat him, they can at least blind him. They all web up his face and this gives Spider-Man and them time to escape. Spider-Ham asks what their next plan is with Spider-Girl believing that they're running away before Spider-Man reveals that they aren't because he has a plan but just needs more room to defeat Spider-Goblin.
They make it to another part of the Helicarrier with the energy source. They all try to hide until their senses go off and they discover that Spider-Goblin has quickly caught up with them and ambushes them. They battle him and at one point, Spider-Man 2099 and Spyder-Knight use their webs on Spider-Goblin's extra spider arms to hold him before the other Web-Warriors start hitting him. Spider-Goblin starts fizzing with electricity and breaks Spider-Man 2099 and Spyder-Knight's webs off before they fire more on him. Spider-Man notices this and tells the Web-Warriors to hold him down. He then uses Electro to reverse the effects of the serum which transforms Spider-Goblin back into Norman. The victory is short lived when Electro is finally free from the Siege Perilous. He threatens Norman but Spider-Man prevents him before Electro reveals that he has the power of the Siege Perilous. He then uses his powers to start changing the Helicarrier but Spider-Man and the others are able to escape with Norman out through a hatch and onto the main land. They discover that Electro has turned the Helicarrier into a giant robot with Electro deciding to not kill Norman but them instead. Spider-Man hopes that they are all in for a fight because all their worlds are at stake. Electro thanks them for giving him enough power from the Siege Perilous and proceeds to crush them but they dodge. However, Electro changes his mind and proceeds to fly out and destroy the city. The Web-Warriors meet up on a roof and Spider-Man Noir asks what their next move is. Spider-Man reveals that he doesn't know what to do anymore but Spider-Girl tells him to snap out of it with Spider-Man 2099 pointing out what he did in their worlds by making a difference, that it's time to do it again but in the here and now. Spyder-Knight points out that he is still Spider-Man and Spider-Ham reveals that they won't let him give up. Encouraged, Spider-Man realizes that he can't think about himself and to think of others first. He points out that they have to take Norman to the nearest hospital and save the day like they always do. Electro terrorizes the city until the Web-Warriors arrive. Spider-Man tells them to tie the robot up and slow it down because they can't allow Electro to use it to fry the city. They all tie him up but Electro uses his powers to break the webs and fire missiles at them. They all manage to dodge them all and destroy the missile launchers with Spider-Girl commenting to Spider-Ham's shot for not being bad for a "ham". Electro then decides to have the robot self-destruct and flies up to the tallest building. Spider-Man 2099 realizes that if Electro has set the Helicarrier's engines to overload, they are in a complete melt down which makes the others worried. Spider-Man decides to enter the robot but Spider-Girl offers enter the Helicarrier to deactivate the self destruct sequence because her Helicarrier is the same as his one while they distract Electro. While the Spider-Girl enters the robot, the other Web-Warriors manage to get Electro out to fight them while refusing to listen to reason. Spider-Girl finds that Spider-Ham has followed her in to help. However, Spider-Man defeats Electro and strips him of the Siege Perilous's power.
The Web-Warriors meet up and Spider-Girl and Spider-Ham reveal that they couldn't stop the self-destruct but have set it to enter space. The robot flies into space and explodes, thus saving the city. Spider-Man reveals that the Siege Perilous has enough power to send them back home and it opens six portals to take them back to their own dimensions. Spider-Man thanks them helping him save his universe. Spider-girl watches as the other Spiders thank Peter for all he did for them and for making them believe and that he also made them "better Spideys". Spider-Girl and the others proceed to go back to their dimensions.
Season 4: Ultimate Spider-Man vs The Sinister 6
Return to the Spider-Verse: Part 1
Spider-Girl makes a cameo when Nick Fury, Doctor Strange and Madame Web show Spider-Man and Kid Arachnid (a new spider name for Miles Morales) what's happening with reality after the destruction of the Siege Perilous.
Return to the Spider-Verse: Part 2
Spider-Girl makes a cameo in a flashback when Spider-Man explains that he and Kid Arachnid are trying to get the pieces of the Siege Perilous before every universe can collapse in on itself.
Return to the Spider-Verse: Part 3
Spider-Girl makes a cameo in a flashback when Spider-Man once again explains that he and Kid Arachnid are trying to get the pieces of the Siege Perilous before every universe can collapse in on itself and that an evil spider named Wolf Spider is trying to gather them for a different reason.
Return to the Spider-Verse: Part 4
Spider-Girl makes a cameo, where it is revealed that she encountered the evil Spider-Man, Wolf Spider who had drained the life essence of her and his other counterparts. When Spider-Man allows Wolf Spider to drain his life essence, he finds himself in another world with all the other Spider-People and convinces them to not give up. This succeeds when Spider-Man reveals to Wolf Spider that since all the Spider-People, he drained the power of heroes and since every Peter Parker is a good guy but since he is evil, he poisoned himself with their life forces.
Wolf Spider then shatters apart, with his body now trapped in other dimensions he cannot escape and all the life-forces of every Spider-Man he absorbed were restored back to normal. With all of the Spiders free, they ask Ultimate on how he knew Wolf would explode and he explains his gamble on their heroics. Getting their answer on why Ultimate is the center of their universes, they all return to their respective dimensions after thanking him.
Friends and Allies
- Web-Warriors (Alternate Universe) - Counterparts and Allies
- Spider-Man/Peter Parker - Counterpart and Ally
- Spider-Man 2099/Miguel O'Hara - Ally
- Spider-Man Noir/Peter Parker - Counterpart and Ally
- Spider-Ham/Peter Porker - Counterpart and Ally
- Spyder-Knight/Peter Parker - Counterpart and Ally
- Kid Arachnid/Ultimate Spider-Man/Miles Morales - Ally
- Blood Spider/Peter Parker - Counterpart and Ally
- Web Beard/Peter Parker - Counterpart and Ally
- Web-Slinger/Peter Parker - Counterpart and Ally
- Spider-Gwen/Gwen Stacy - Ally
- Spider-Punk/Peter Parker - Counterpart and Ally
- Other Alternate Reality's Good Spider-Men - Allies
- S.H.I.E.L.D. - Allies
- Nicole Fury - Mentor
- Harriet Osborn - Best Friend
- Green Goblin/Norma Osborn - Arch-Nemesis and Attempted Killer
- Mademoislle Batroc/Batroc - Enemy
- Miss Kraven/Kravinoff - Enemy
- Doctor Lady-Ock/Octavius - Enemy
- Green Goblin/Norman Osborn - Enemy and Attempted Killer
- Electro/Max Dillon - Enemy and Attempted Killer
- Wolf Spider/Peter Parker - Counterpart, Enemy and Attempted Killer
Powers & Abilities
After Petra was bitten by a radioactive spider, she achieved arachnid powers and uses to fight crime and villainy.
- Superhuman Strength: Spider-Girl possesses superhuman strength, she is strong enough to easily destroy mechanical robots from S.H.I.E.L.D and hold many tons of weight when needed. It is stated that Spider-Girl can lift in max about 17 tons. 
- Superhuman Durability: Spider-Girl's body is physically tougher and more resistant to some types of injury than the body of a normal human. She has endured blows from beings with strength much greater than her own, fallen many meters in the air, and even been hit through steel walls.
- Superhuman Agility: Spider-Girl is very agile and can easily do back flips in air. Because of her slender, feminine form, Spider-Girl is even more agile than Peter Parker. 
- Superhuman Reflexes: Spider-Girl's reflexes are above even the finest human athlete. She has shown that she can dodge strikes from beings with supernatural speed, gunfire, and energy blasts.
- Wall-Crawling: Being injected by the mutated spider, Spider-Girl can crawl along surfaces much like a spider would. 
- Spider-Sense: Spider-Girl can sense dangers that happens moments before it actually happens, which enhances her reflexes. It works like a alarm that sounds when danger is near.
- Superhuman Equilibrium: After being bitten by the mutated spider, Spider-Girl can balance herself on any object no matter small or narrow.
- Increased Metabolism: Spider-Girl's peak-female metabolism allows her to heal from injuries slightly faster than normal. Though major injuries, loss of blood, organs or amputated limbs will not regenerate. Her metabolism is not as developed as Miles Morales, Miguel O'Hara or Peter Parker.
c - cameo
f - flashback
- In the comic series, Spider-Girl is the daughter of Peter Parker and Mary Jane Watson known as May "Mayday" Parker.
- The scene on the Georgia Washington Bridge is an homage to the comic The Night Gwen Stacy Died". However, here Spider-Man manages to save the girl.
- Spider-Girl is a gender-swapped version of Spider-Man.
- This is the first animated appearance of Spider-Girl, although it's not May Parker.
- Main article: Spider-Girl/Gallery