Universe
Marvel Universe

Real Name
Ulik

Aliases
"Ulik, the Unstoppable Troll"; "Ulik, the Unconquerable Troll"

Citizenship
Domain of Trolls

Place of Birth
Nornheim

First Appearance
Thor #137 (1968)

 The God of Thunder, Thor first encountered Ulik when Geirrodur, King of the Rock Trolls, commanded Ulik to steal Mjolnir, Thor's enchanted hammer. Ulik was defeated by Thor in what would be the first of countless defeats at the hands of the Odinson.
 Ulik is also responsible for the release of Mangog, a monster that is said to be the combined hatred of billions of beings killed by Odin and the Norse Gods. Mangog is nearly unstoppable and has aided various evil beings, most recently the mad Titan Thanos.
 Ulik may appear to be a mindless bruiser, but he is ambitious. Proclaiming that only Geirrodur may command him, Ulik has still tried to wrest the throne from him more than once. He has led several invasions of Earth through interdimensional portals, only to suffer defeat at the hands of Thor and Earth's other heroes. Once, after failing in an invasion attempt, Thor sealed the portal with molten rock. Geirrodur then banished Ulik to the furnaces of the Rock Troll Kingdom. After escaping, Ulik found another realm of trolls. By dispatching of their ruler, Ulik took control of this realm and continues his pursuit of revenge upon Thor and the other Asgardians.