From Creatures Wikia
Dylan the Insane Shee. The agent injects a pair of hands, one red and one blue. The hands can then be used to put any Creature into a state of suspended animation (cryogenically freezing them). Placing the blue hand over a Creature and pressing it will freeze the Creature; doing the same with the red hand will unfreeze and awaken them. The Creature may be a bit chilly when it awakens. The CryoHands can be downloaded at Dylan's Garden.