The Cryobomb is a doomsday device created by the supervillain Icy Mike.
The Japanese characters written on the side of the Cryobomb are katakana reading "samui", meaning "cold".
The Cyrobomb features in the story Witless Minions 4-Eva. Icy Mike intended to detonate the Cryobomb, with the intent of freezing fifty thousand people to death. However, he had hired the Witless Minions as henchmen; when he revealed that he intended to actually detonate the Cryobomb rather than use it to extort money, Thugboy beat him to death with an icicle.
- The shape of the Cryobomb and the katakana written on it are a reference to the cryogenic vault from AKIRA.