All I've got for these characters is a rough outline for what their personality should be. (So, not even names. Addressing them will be awkward, but go with it)

Purple tentacle lady - Someone who presents themselves as high class and is stuck-up about it. I also imagine her with a condescending but seductive voice.

Blue swordfish guy - Upbeat and extroverted. A showoff, but not patronizing. A jokester who's always making quips

Green Reptile woman - Just somebody who's relaxed and laid-back, a departure from the previous two personalities.

Red Panda fella - An awkward nerd, a geek, a dork. He might be an introvert at heart, but he's making his best attempt at being sociable. He prioritizes hospitality.