Here's a character I haven't touched in a good long while! Meet Mire!
An alien goo who was discovered by a scientist and was adopted and raised by them.
Mire is a sweet boi who likes to help people, so he became a hero!
(Though his hero get up tends to spook people, he's not wearing it right now.)

He's a symbiote-like goo who can sustain himself without a host. When he's out doing hero stuff, he can schlorp up villains and drain their energy to exhaustion, then make their arrest. He can also use his mass to defend civilians and allies

When he isn't doing hero stuff, he's helping his adoptive father out in the lab. Sometimes he loses his head at times. (Quite literally)