Creeper
The Ceeper is a green and mean little jerk who worked for the horned king. He is currently enjoying his freedom when the Horned King got banished.
However, based in clues from the guest star list for the Littlefoot and Ash adventure films, it's surmised that he will no doubt become an independent villain working with each new villain for the day. In other words, he'll end up as an anti-hero like Shenzi, Banzai, and Ed. Sometimes, he's sometimes a villain. He is a planned Shell Louge Squad member.