Squirrel Girl

Lorien Green was born to Dorian Green and Liliana Khalad. She suffered a modification in her genes for unknown reasons that granted her squirrel-like abilities, which manifested predominantly in the form of a prehensile tail. When her parents consulted with a doctor, it was determined that Lorien wasn't a mutant, even though she believed so for a long time.

When she was ten years old, Lorien discovered she could communicate with squirrels after ovearhering one of these rodents in her window. She subsequently saved this squirrel from being chased by a dog, and they became friends. The squirrel, who identified himself as Monkey Joe, encouraged Lorien to use her abilities to help people. Ever since then, Lorien began to fantasize about becoming a superhero, and came up with the alias of the "Unbeatable Squirrel Girl."