Following considerations, I considered the shapes Four's body could take. The start however was maybe a little slow. I put a lot of attention to Four's head, thinking of axolotls but after some thought I may have been going too directly. I feel it also started looking a little too like Colo Colo. I'm also considering avoiding horns, though the frills add a charming touch to Four's appeal.
So I took a step back, looking at the two most successful colour thumbnails and building on them after the Maya workshop. There's still a lot of room for refinement however. I was looking at ferrets, otters, and Siamese fighting fish for possible features. The fighting fish direction I think brought back a lot of the sense of otherworldness to Four's design. Although utilising the fins is going to be an interesting prospect to consider.