Marvpyas' concept art

Marvpyas is a monster born from a cursed lake. Following this theme, I wanted his appearance to reflect common characteristics of sea monsters, such as Lovecraft's Dagon—with fins, scales, piranha teeth, and other details not yet shown.
In addition to the marine aesthetic, his design needed to be simple (due to VFX limitations) but also easily identifiable as a silhouette, thus the horns and the cloak.

The "horns" and the cloak were inspired by typical portrayals of the Pied Piper of Hamlin, in which the character wears a similarly shaped hat and clothing.

Many small holes cover his skull. These perforations are interconnected and vary in size. When met with wind, they produce a melody similar to a flute.

However, among the grotesque, Marvpyas also had to be strangely beautiful. After all, he is the false gift that condemned Old Oakburn, a rotten but mesmerizing gem.