Gwenpool

Gwendolyn "Gwen" Poole arrived to the Marvel Universe from what she claims to be "the real world". In her home reality, Gwen had been a comics superfan as an escape from her life as an unemployed 18-19 year-old high school dropout. Unwilling to be an "extra" in the Marvel world, she went to a tailor for superheroes and requested her own costume. The tailor (named Ronnie) complied, but misread Gwen's application form, and thought Gwen went by the alias of "Gwenpool", leading to a costume similar to Deadpool's. Upon gaining the ability to manipulate the borders of the fourth wall from an attempt to return her to reality, allowing her to travel in time, Gwen retcons the Marvel Universe into believing her to be a mutant after being given the idea by Kamala Khan, allowing her to enter the gates of Krakoa.