Tamaki

He is very shy, quiet and depressed, he doesn't talk much, he feels embarrassed about everything and he spends his time quiet and with his head down, he also has very low self-esteem.

He is strong, has black hair and always looks at the floor.
When he uses his quirk his body changes and he can have crab tentacle arms etc...

The food he eats can become limbs and he defends himself with that, although many times he prefers not to fight because of his low self-esteem.