The Vomiting Crystal
The Vomiting Crystal is an NPC hidden away in D.S.A: When you have to escape from the luscious Emerald City from Chris Martin's Coldplay Robots he appears in the level's grottiest room, which previously contained nothing.
The Vomiting Crystal represents my fear of copyright infringement. The game is liberal with infringing copyrights of others, and the Vomiting Crystal tells you the story of how he was screwed by his managers, and became forgotten, and his image warped. "They did it to me, and they'll do it to you, too." He warns.