Talk:Gokotai/@comment-119.94.179.58-20160519072054/@comment-108.86.138.46-20160519215804

I'd actually guess that the big tiger is a fusion of his little tigers. According to the artbook his five original tigers all either have two blue or two gold eyes. His big Kiwame tiger has heterochromia, with one blue and one gold eye.

This might be reading into things a bit too much, but you could also say the big tiger has a combination of the little tigers' most distinctive markings -- the "sock" feet from the 4th cub and the stripey tail from the 5th cub (numbering taken from the artbook).