The "I'm a Believer" Sing-a-ma-jig is a fanmade "The Hits" Sing-a-ma-jig. He is orange with dark blue hair, black circle eyes, a maroon nose and a white mouth. He has the same voice as red "All Star" one. He sings "I'm a believer", has the same ear shape as the yellow sing a ma jig, same feet shape as the ear shape, the same hand pose as the lawn green, and wears a blue shirt with electric green lettering that says "I'm a believer!" and pink circles. He signs in by saying "Are You Ready To Rock!?", enters song mode by saying "Let. Us. Rock!!" and signs out by saying "Later Dude!".
I'm a believer sing a ma jig

This is what he looks like.