He wont get along with Ivy. He is all about the Green. And Abby's downstairs.
Ivy is all about being a girl dick. And I don't think she cares about nature. Just her selfish gains through botany.
Though for serious DLC request, I wouldn't mind Animal Man. I would dig that actually. Or for something interesting Nelson Jent, I think that's his name. The Dial H dude. Every time you rock his power he could transform randomly into any of the hero's he became in the comic. And his super can turn him into Boy Chimney.