The three DLC outfits for Haggis are all references to classic horror-themed 2D platformer games:
• The Vampire Hunter skin is based on Simon Belmont of the Castlevania series.
• The Royal Knight skin is based on Sir Arthur of the Ghosts 'n Goblins series.
• The Red Gargoyle skin is based on Firebrand, a recurring enemy from the Ghosts 'n Goblins series and a playable character in Gargoyle's Quest.