This is Blue. He's my grem buddy. Sometimes he just wears a chain with his crab charm instead of his fancy collar, all depending on his mood. When he is relaxed, his inner ear turns to the color of his feet.

All the rest of grem species knowledge resides here https://www.weasyl.com/submission/514363/grem2-guidesheet

Art and species are both by mrgremble
Blue belongs to kraine