∆lice

Δlice is aggressive, willing to kill anyone who enters her room. This is seen in Basics in Behavior when Zip and Oliver disguise her room as an exit door to trick Claire. It is possible that Δlice is more dangerous than the teachers, due to how she's locked away and isolated in her room, with "DON'T ENTER" signs on the door. This could also be backed up by the three teacher's reactions to Claire booking it to Δlice's room, as they seem to show signs of fear.

Appearance: Δlice is a normal-looking girl with brown hair, tan skin, and an ahoge on her head. She wears a damaged long-sleeved shirt with a black necklace and has reddish scars on each leg. Her outfit includes a tea-length skirt, white socks, and black Mary janes.