Who Am I #11

Sorry about how long you've had to wait for the new Who Am I but suprisingly I am occupied. But anyways,the previous winners were no one although there waas someone who got most of them right but not putting their names haha. For Example: Nigahiga and The guy of kon Fu panda and the last no idea. HAHA. Didn't get their name so here are the answers:
Ryan Higa, Ryan Higa, Master Oogway and Randal Duk Kim.

Heres your new one:

Hints:
The Coolest ever! Don't try to fight him...
Youtube, Song covers
EASY PEASY MERRY CHRISTMAS
Youtube, Song Covers

And yeah. There you have it. If you can't remember where to put your answers heres a clue, IN THE COMMENTS. Merry christmas! STOP! I meant happy new year (SORRRRY). CHERUB BEAT THAT.