Puffy Clouds was a creeper minion who was hatched in YogLabs and tamed by Simon. He was born from the egg dropped by a mutated creeper during the genetic research in YogLabs, conducted by Dr. Srivaramen.
After being fed stacks of TNT and gunpowder, Puffy went up against Bort, the mutated zombie, and successfully killed him. Puffy also killed Simon twice in the process. Tragically, after his triumph, Puffy was put down with a shotgun to the head by Dr. Srivaramen, under the orders of Lewis. Simon was devastated by this and wept at his adopted child's death.
- It is possible that Puffy was befriended by Simon so easily because of his love for TNT and to blow it up.