Alopex: Mega Man 8-Bit Deathmatch Deltarune Yu-Gi-Oh! Master Duel 5D Chess with Multiverse Time Travel (can play this in real life, too)
Gelphox: Puyo Puyo Slime Rancher LSD Dream Emulator Baldur's Gate 3 (modded the game so his character can be a gelatinous cube)
Cirrus: Inscryption Rain World Bakugan (2009) Pac-Man (but to them, it's a horror game, because they're a ghost)
Kasi: Stardew Valley Harvest Moon
Akesi: Castlevania Shin Megami Tensei
Kasi AND Akesi together: Any game where the two of them can partner up
Topaz (if you can get her to sit still for long enough to play them): Bejeweled Minecraft Sonic Tetris (Tetris Effect is the only game she can actually focus on willingly)
Clarion: Wii Sports Tennis Insaniquarium! Touhou DDR (she does surprisingly well for someone who doesn't have any legs)
"There's this one other hybrid we know, Topaz. She's a were-Braicanroc, that is, half Braixen, half Lycanroc. I think she's pretty fun to hang around with sometimes, but for some reason, Akesi just can't stand her!"
"Werewolvesss and vampiresss are natural enemiesss, Kasssi. I've sssaid that ssso many timesss. But assside from that, I find her to be quite irritating, even on a persssonal level, due in no sssmall part to her excsssesssssively boisssterousss persssonality."
"As for how we handle taking turns, we use a special skateboard with a pillow strapped to it."
"You sssee, while one of usss sssleepsss, the other sssibling mussst ssstay on the move, ssso thisss allowsss usss to do ssso without dragging each other acrosssss the ground."
"It's a bit difficult for us to actually play against each other, since in most cases only one of us is awake at a time, but in the few hours we get to spend together, we sometimes enjoy playing board games!"
"I've been eating the piecsssesss while Kasssi isssn't looking."
"Hey, no fair!"
Side note, what a shame it is that the two characters with the most interesting dynamic among my cast are also the most bullshit to try and draw.