Ulik is a member of the race of Rock Trolls and lives within caverns in the extradimensional realm of Asgard. Over a millennium old, Ulik is the strongest and fiercest of all the Trolls. Virtually nothing is known of his ancestry, his early life, or why he is so much more powerful than the other members of his race. After Ulik's parents were slain by drunkest Frost Giants, Ulik watched over his brother Horth.
Ulik first met Thor, the mightiest warrior of Asgard, several years ago when he attempted to steal Thor's hammer for the Rock Trolls. Ulik was the leading warrior in the Rock Troll's war with the gods of Asgard, during which he fought a monumental battle against Thor, in which Ulik was armed with a duplicate of Thor's own uru hammer. Although Ulik proved to be a formidable opponent, Thor ultimately triumphed over him. The Trolls' attempted invasion of Asgard, under the leadership of the Troll king Geirrodur, failed.
Ulik clashed with Thor repeatedly in the following years, but always unsuccessfully. On one occasion, Ulik led the Rock Trolls through an interdimensional tunnel to Earth in an invasion attempt that was repelled by Thor. Ulik's failure, coupled with his brief usurpation of the rule of Geirrodur's kingdom of Trolls in the Asgard Mountains, led Geirrodur to consign him to stoking the subterranean furnaces that heat the kingdom.
Dissatisfied, Ulik eventually escaped and wandered deeper beneath Asgard's surface, finally discovering a lost tribe of Trolls unknown to Geirrodur. Ulik disposed of their leader and led this tribe through the interdimensional portal to Earth to again attempt to invade it. This attempt was defeated, and the portal sealed with molten rock.
Ulik returned and fought Thor but was thrown down a deep hole before accidentally waking Odin's former foe Mangog, hoping he could be used as an ally against Asgard after reading Odin's inscription on the prison door.
Jane was taken captive by Pluto. Pluto then revealed his ally in vengeance Loki. Loki then summoned Ulik to battle Thor. Thor and Ulik battled back and forth until Ulik discovered that he was but the pawn of Pluto and Loki. Enraged, Ulik began to attack Pluto. After saving Pluto from Ulik, Thor sent Ulik back to Asgard.
The demon Mephisto captured Ulik's brother Horth in order to force Ulik to defeat Thor in battle. But Ulik himself was defeated, and Mephisto later told Thor that he had killed Horth even before Ulik challenged him in battle.
Ulik fought on the side of several Asgardians, Warriors Three, Balder, and Sif who were lost in their own Earthly identities. He battled a version of Thor called Red Norvell and worked with his temporary allies to escape an earth-based technological conspiracy against lost Asgardians.
Ulik the Troll was stomping around Earth and it came down to Punisher, Daredevil, and the other Marvel Knights to stop his plan to destroy Asgard. Punisher went one-on-one with Ulik.
After Ragnarok and the return of the Gods, Ulik was believed to have escaped from Oklahoma's Asgard. The Troll had been on a multi-state drinking binge ending outside Telluride Colorado where he was knocked unconscious by A-Bomb […]