He still uses he/him pronouns because he honestly just feels more comfortable using them, but the whole incident of turning into a giant spider lady threw his gender all out of whack. He very vaguely identifies as a lesbian, but he's got a lot of jelly in his jam that he needs to unpack before he can make any conclusive statements about it.
Also there's something very fun to me about the idea of a scene where a drider, a lamia, and a normal human all try to cuddle without exploding into a big noodly mess
On that note, 3-4 main characters feels right. This isn't the sort of story that works with a huge ensemble cast, but I'm sick and tired of writing monogamy.