Not much is known about Gro, other than that she is a prostitute who hails from a foreign country and can only speak very basic English. She has a brother Cheslav, who himself is a hitman. Upon relocating to New York, Gro was hired almost daily by Parker Robbins.
Gro was created by Brian K. Vaughan and Kyle Hotz and first appeared in The Hood #1.
Gro, as with most of the characters and ideas introduced in The Hood, went completely ignored when the character was used by Brian Michael Bendis in The New Avengers. As such, Gro hasn't been seen since.
Powers and Abilities
Gro has no superhuman powers.