I wasn't too keen on Discord's design in the beginning, but you have no idea how much fun it is to draw him. He's just...insane. His eyes, his facial structure, the various animal parts to his body...it's crazy.
His face was the best part to draw. So far he's the only MLP character that I've successfully drawn in my style. It actually might be easier to portray the male characters in my style rather than the female ones as I'm more inclined to want to use more equine faces on them. Not sure how "equine" this is but I tried as best as I could while trying to keep that crooked/bent look his muzzle has.