Cheater
Part of speech: noun
Definition: Informal for cheat, someone who commits the act of cheating.
Example sentence: You don't have to be a cheater to sing a cheatin' song, that's what I'm saying.
Trickster
Part of speech: noun
Definition: A mythological figure responsible for teaching others through the use of guile and treason.One who performs a trick.An impish or playful person.