Sadmile

Sadmile (サドマイル, Sadomairu) is an animal whose body is situated in the east of Twilight Canyon, to the right of the Bird Man.

Characteristics
Sadmile is a humanoid creature that wears black attire. It may be interpreted to have a hood and sleeves that drape down its outstretched arms to give off a feathered appearance. The black attire follows along the shape of its body to the legs, where it wears white boots. The skin of its hands and face appear to be pure white, while it has dark teal oval eyes and lips. On it's chest appears to be a round, red gem and on top it's head is the high-spired shell of a mollusk. The shell is light brown from the bottom and gets lighter, until white, towards the top.

Hint
The Blackbird of Death mentioned in the file may have an equivalent seen nearby.

Trivia

 * On the original official website for Moon made in 1998, Sadmile’s flavor text was the following: "すべてが謎につつまれた存在. 巻き貝が進化したという説もある. ", which translates to, "Everything about it is shrouded in mystery. It's theorized that it evolved from a simple conch."