Blendan is a small marshmallow-like creature that had melted into and become permanently fused with a kitchen-blender mech suit. The blender is filled with some sort of energizing smoothie which power the mech but also if and when it touches him, his body dissolves or melts a little more cuz it's basically like acid to him.
Detective Cookie is a mushroom... of what kind, I can't remember but he is based off a specific real species of white mushrooms that relate to his name somehow (maybe Boletus cookei?). He works as a vigilante detective who is well-known and liked around town but doesn't get paid. At the very least, the police often just let him do whatever he wants at crime scenes, as long as he doesn't eat the corpses and doesn't get in the way of police autopsies (by eating the corpses). He's mute, either selectively or as a disability since birth, but has a rather verbose (and egotistical) internal monologue in which he mimics the narration of classic detective stories and easily gets him distracted by minute details (since that's what the great detectives focus on). While he takes his job seriously, outside of work he can be immature, apathetic and sometimes abruptly violent or morbid in his actions and vibes. His best friend is a cabbage who forcefully acts as his unpaid "assistant" and "interpreter".
This red thing is a crustacean species tangentially related to the crab (they are distant cousins). The horn on its head is like a bee-stinger expect they can regrow them and also make erectify them to pierce wider or deeper things. They like jousting with their horns like swords. The species used to have arms but then I removed all of their arms because I had to model them in 3D and didn't feel like adding arms.