Nightwing/Rainwing is actually a surprisingly plausible combo. Not sure how much of the books you've read, so I apologize if I'm saying things you already know:

in the first arc, the Nightwings' ultimate goal was to steal the rainforest from the Rainwings since their volcano home was really, really bad. They were capturing rainwings to study them and moving in and out of the forest with animus enchanted tunnels. It's totally reasonable to have Dracula be bitter and resentful as usual through how bad the tribe had it and then being convinced to see the rest of the world by a Rainwing who had more fight in her than he expected.

And maybe Lisa was killed by the experiments like so many others, oops

And hey, if anyone from his tribe gets jealous of camo scales or better diet from the forest, he'd have that much in common with Moonwatcher!