Board Thread:Sonic News and Updates/@comment-27035837-20131002144257/@comment-13508171-20140110114803

Kikikikikikikikiki wrote: I think he does have a thumb, but not the rest of his fingers. His hands are more like mittens, and have one big spot instead of four individual fingers.

What I'm trying to say is "Knuckles doesn't have fingers in the games, Sonic Underground, Sonic X, making Sonic Boom the first TV show where Knuckles has fingers."