Grimskull

"I'm Boss GrimSkull ! This whole planet is mine !"

Grimskull was the Ork Warboss leading the Ork Waaagh! invading Graia and the secondary villain of the game Warhammer 40,000: Space Marine.

Graia

Grimskull led his Waaagh! to Graia with the intent of looting the Forgeworlds Titans. Whilst in his cruiser, he encountered Captain Titus (who had used a jump pack to board it). Whilst trying to fill the Ultramarine's body with lead, Titus used the cruisers cannon to destroy the bridge, making the cruiser crash land. Grimskull, however, managed to survive.

Grimskull encountered Titus again in Manufactorum Ajakis. While Titus was trying to get the mysterious power source, Grimskull (who was attacking them), became interested in it and sought to claim it as his. However, the power source became unstable and exploded, which sent Titus plummeting to the sewers. Rather annoyed by this, Grimskull sent his Orks to retrieve it. They, however, failed.

As Titus tried to activate the Psychic Scourge (a weapon that was apparently capable of destroying the Ork invaders), Grimskull arrives by dropship. As Grimskull was about to attack, he gets blasted by psychic waves. However, to the Ultramarines surprise, this didn't actually kill the Orks, but instead opens warp portals that allowed the Forces of Chaos to enter the forgeworld. After getting back up his feet, Grimskull was then swarmed by bloodletters, which made him loose his footing and fell off the railings. Whilst Titus and the group were being incapacitated by the Chaos Lord Nemeroth, Grimskull managed to climb back up and engaged to Nemeroth in combat, which resulted in both of them falling off another railing.

Grimskull made his final appearance trying to kill Titus. However, the Ork was bested by the Ultramarine and got his face blown off by a plasma pistol shot. Without their boss' leadership, the Ork horde quickly fell into disarray. Leaving only the Forces of Chaos for the Imperial Forces to deal with.

Trivia

• His coloring suggests that he's from the Evil Sunz.
• He is one of the rare kind of Orks, since he actually has a bit of tactical awareness. This is shown when he orders his Orks to seize the planetary defense weapons and turn them on the Imperial Ships, denying the Imperial ground troops any further support. Titus even remarked that he wasn't a fool.
• He is one of the very few Orks who can actually hit his target.
• He and the Orks depicted in Space Marine are apparently less grammar challenged than the Orks usually depicted in other games.
• He's the only character to have a more traditional boss fight. Unlike Nemeroth, whose boss fight only consisted of really easy quick time events.