Sean Datz

Sean, is a Negator working for Under. Their capture was part of the 99th Penalty quest, but they were instead kidnapped by Under before the Union could find them.

Appearance
When his negator ability isn't active, Sean was shown to be a young adult with three eyes, a coat, and blue denim jeans.

Personality
Little of Sean's personality is known. When first shown in chapter 9, he was shown using their power to steal an apple from a fruit stand, implying that they have little issue with abusing their power.

Powers & Abilities
Unseen: Allows Sean to become invisible. It's described by Rip as being an self-targeting compulsory-activation type. When Sean closes their eyes, they and everything they recognize as their property is rendered invisible.