Some attributes
First Member of the Shadow Trio, as the "One Horned", representing Hate
Second Arch-Enemy of Stickman
Third Formerly the "Two Horned", before he got defeated by Stickman once
Other attributes

Defero, the Master of Hate, and one horned Shadow is Stickman's arch-nemesis, and one of the members of the Shadow Trio, serving as the "Creator of Hate".