Wow, Eva takes me back. I had to think for a second about who might be fun to play off of her, and I'm curious if you're alright with playing off of OC's! There's a bunch of info on his journal but the long story short is that he's a hope-powered magical boy from a corporate dystopian setting, which could make for an interesting mash-up with a Eva's... Eva-ness. (because really how else do you describe it?)