Odin used the Destroyer to guard the Casket of Ancient Winters against intruders (such as the Frost Giants), while Loki Laufeyson sent it to Earth to kill his half-brother Thor Odinson and The Warriors Three. The Destroyer was defeated by Thor using his hammer Mjolnir, by hurling it through its head.
The Destroyer appeared as a giant, metal beast, at least four times the height of a human. Its armour seemed to be resistant to projectiles such as bullets. The Destroyer would attack by opening triangular holes in its face from which red light would emanate - a destructive red beam would then shoot from these holes.