Nell

Nell is a hidden character that can only be found if you start the game using the "BLOOD" cheat code. She is Zack's ex-girlfriend.

Nell was locked behind a cheat code because as stated by Goiaba Megas Xellox (creator of the game), "her dialog and presence are too much for the average player, and I didn't want everyone playing the game to easily find her anymore. I also didn't want to turn her dialog down because the ridiculous garbage she says is part of her personality, and doing that would kill her as a character".

She is a recruitable character that can be found by trying to open up every door in the game. Some of them open, revealing that Nell is inside (just like little girl). Once you find her enough times, she will join your party.

Her quirk in battles is being a necromancer, being able to kill anyone during battle including your teammates, and also having reviving skills.

The game itself describes her as:

"She talks about weird subjects all the time. Can manipulate life and death for no reason."