Obsidian

Obsidian is a contestant on Red Team.

Appearance
Obsidian is a large block of obsidian dotted with purple spots. In the official comic, only two dots are detailed on her face; one over her left eye and another near her forehead.

Personality
She doesn't always think things through, but she's still pretty smart and a very fast thinker. Obsidian is best known for her incredible strength, being able to lift items twenty times her weight! She's also fireproof, and can burst into flames at will (a result of one of Bottle's permanent spells). Even though she intimidates others, Obsidian is good at making friends. Most of the competitors, especially Slime Block, think of her as mean or dangerous, but they would assume wrongly. Obsidian is typically a rather friendly person, even if she won't hesitate to smash something if asked to do so.

Obsidian seemingly displays anger issues in OSS 5, destroying an oven.