Ecaf Yppah is a character in the Malicious (series). He is an alternate dimension version and good twin of Happy Face. He first appeared as a secret character in Happy Face's Fantendo Smash Bros.
While Happy Face can transform into Angry Face, Ecaf Yppah can also transform himself into an even calmer, good, less-hyper (is that even possible) version called Decaf Yppah. The only main difference in power is that he falls asleep more.