I’m not sure you want to invoke the sequel, which is best known as a MST3K episode (and for Clint Eastwoods early screen appearance). Actually, scratch that - it’s perfect - lean really hard into the goofy 50s B-movie vibes and I’d love it! I actually wish the monster houses felt more 30s-era-specific.
Phantom vs Dracula vs Invisible Man in and around a Parisian opera house could be great. Creature is, as discussed, harder - he might pair well with Wolfie, but they just used him. In seriousness, Invisible Man might actually be the best rival.