Board Thread:Questions and Answers/@comment-4793248-20130504150652/@comment-5933274-20130607201740

He has a crab motif because in episode 39 of Goseiger Hyde sensed Magis's aura in a crab.

P.S. attention everyone on this wikia, I want to see a fan made concept of Gosei Green's helmet with a crab because he has a crab motif.