This is what SSJX is mainly like. A carefree, goofy, low intelligence and fun loving hedgehog. Until he snaps into serious mode like in that other pic. xD This is how he's portrayed in a series I made.

He has squared and oversized spines that if you saw his head from above, the placement of the spines would resemble steps curving on a spiral stairway. And an oversized chest that looks like a guitar pick. From this angle, you can't see the extended heels with holes that contain his energy.