We have no castmates for you unfortunately but we do have a lot of people who are canon familiar. The game is lostcarnival! It's a world travelling carnival with transformation aspects (growing horns, tails, whatever you want to some degree or another) - and I'm reaching out for Ana or Lucio in particular mostly because the medical team is currently desperately lacking, especially considering how often people need to get patched up from various dimension hopping incidents. Lucio could double as a performer too, I'd bet, but Ana would also be lovely because she is one my favourites! (I love Reinhardt too and he would also fit in well, though there is a less specific niche for him.)

It's slow/medium and at about 45 characters at the moment! I'd say it's a mix of carnival life and exploring new worlds/dealing with meta plot shenanigans like getting attacked by vampire gangs/other people they've pissed off while travelling. The plot is based on where they go, but there is plenty of drama offered by the mod events.

Anyway, take a look if you want, and hopefully you might see something you like! If not, I hope you find a good place for Ana because she's wonderful!