|First appearance||"The New Kid Part 1"|
A Thuglett slug is a rose red extremely rare Psychic Slug with small horns, a mohawk, and mask patterns over the eyes. They have illusionary abilities that only affect living things as seen in "The New Kid: Parts 1&2". When they transform, horns grow, their body turns skinny and they grow large teeth. The only one seen belonged to Twist but was a Ghoul pretending to be a normal Slug.
- Protoform Abilities - Turns into whatever slug or ghoul wants and can disguise the owner of them as someone else entirely.
- Illusformed - Transformed into whatever wants. (used in "The New Kid Part 1" to the seem like in Shadow Clan)
- Hologram - Creates holograms of the owner of them.
- Illusionary - Creates illusions of objects that aren't there and can make the owner of them invisible by not making them part of the illusion.