Yeah! He's just this biiig transparent snake (his coloring roughly matches his hair color). He strongly resembles the Mizuchi monster from Shin Megami Tensei series.
In his more humanoid form, he's wearing a very flowing robe over a simpler tunic in order to make his body look broader than it is. His ears are also pointed, and he keeps his tail tucked in the robe since it's super sensitive.
he was still caught by Kagaya, but he broke his bindings and tore him limb from limb and threw the parts into the ocean