Reformed Villains Ticklish Headcannon

Thorax

-lee

Most ticklish out of the Changelings, which is a huge advantage for Pharynx

Frequently tickled, mostly by Pharynx to cheer him up

Clearly dislikes it, and never told anyone except for Marble

He's not one to retaliate, as he's mostly too tired afterwards to care

His most ticklish spots are his belly and sides

-ler

He isn't very often, but when he is, giggle fits happen

Merciful and lenient, and will stop when you ask

Revenge is a bonus, it's just fun seeing the adorable changeling sincerely laugh