This version of Ellie Phimister shares the same history with her Earth-TRN414 counterpart up until Sergei Valishnikov retaliated against an attempt on his life and raided Deadpool's apartment with his men.

After Deadpool accepts Colossus' invitation to join the X-Men, Negasonic Teenage Warhead and the two of them participated in a mission in the Essex House for Mutant Rehabilitation, Russell Collins became furious and wanted to take revenge on members of the orphanage staff, Deadpool killed them and was arrasted with the boy.

Sometime after, Negasonic Teenage Warhead and her girfriend Yukio helps Deadpool to stop Russell and Juggernaut trying to kill the director of Essex House for Mutant Rehabilitation. After this Negasonic and Yukio repaired Cable's time travel device and gave it to Deadpool.


Nuclear Detonation: Negasonic Teenage Warhead has the power to generate explosive nuclear energy. She was shown using it to charge at her enemies with great power and launch a vehicle wreck, which then killed two soldiers. Using her full power, she was capable of creating a tiny nuclear explosion, which leveled a large scrap yard and destroyed part of a scrapped Helicarrier.


Exhaustion: Using her power is apparently exhausting for her, as her full power explosion rendered her unconscious.



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