Edit
Character from Shovel Knight. Like most of the other knights of the game, most of his features are hidden, in his case under a hooded robe and his titular plague doctor mask, though it can be assumed from his exposed hands and feet that he is very skinny and has green skin. He uses a wide variety of bombs.
Originally a boss enemy, he becomes playable in the Plague of Shadows DLC with his own story revolving around creating the ultimate potion and impressing his love interest Mona.
Nobody here but us chickens!