Freeze is a Creature Spell in Dungeon Keeper and Dungeon Keeper 2.
General Information
Freeze is a projectile that suspends enemies in place for a duration. The projectile dissipates after travelling 10 tiles. The creature is then held in suspended animation until it thaws. If it is killed while it is frozen, affected creatures shatter and explode into a gory mess, leaving no corpse for bothering other creatures or to be used as vampire food.
Sufficiently trained Spiders like to go Prisons and freeze captives there for fun.
Availability
Below is a list of Creatures and Heroes that can cast the spell (in order they can be obtained or encountered), with the respective levels at which they unlock the spell: