I know I have a thousand sonas but I'm really vibing with this one, so I'm taking it into the personal representational character roster.

This is Eel. It's a slimy critter from space in the shape of a noodly feline. Its eyes, dorsal fin and lateral stripe can pulse in different colors depending on various stimuli, but the default is a yellow/blue fade. Not pictured is a near infinitely-extendable tonguelike proboscis tendril. It's about the size of an earth tiger, and built fairly stocky. It has a third eye on its forehead which just operates as an additional eyeball, nothing terribly special.

In this picture it's yawning. I referenced a few photos for the expression!