|“||My master... New world... Space resources... Even a decaying pile of scrap like you can guess with that many hints, no?!||„|
|~ Earthrock Torirovich justifying himself.|
Earthrock Trilobyte , also known as the Earthrock Torirovich in Japanese, is one of the bosses and a minor antagonist in Mega Man X8. He is a new generation Repliroid who was designed after a trilobyte, hence his American name. The Maverick Hunters face him while they investigate the mines in the Metal Valley. Earthrock Trilobyte's weapon is the Crystal Wall, which Gigabolt Man-O-War is weak to, though Earthrock can move his around, as seen in his Overdrive attack.
He was voiced by Kyouzou Kudou in Japanese and Randall Wiebe in English.
Earthrock Trilobyte is a short and stocky Repliroid. His armor was mostly brown and yellow on the outside, and evoked the appearance of a trilobite with the character's head, antennae, and back resembling the animal's carapace. Once this outer armor was knocked off, Earthrock Trilobyte was revealed to have a light blue suit underneath.
Earthrock Trilobyte is a spiteful and arrogant individual who looked down on the Maverick Hunters, believing they were ignorant and outdated. He was very loyal to Sigma and often touted his supremacy, and was also very excited about the "new world". Despite his big talk, he appeared very stressed and cowardly whenever his armor was knocked from his body.
Earthrock Trilobyte makes his lair in the Metal Valley stage, which served as the base of operations for Earthrock Trilobyte's old job.
At first, X and his allies are pursued by a berserk Mechaniloid that must be taken down, lest they cannot progress. Afterwards, they must head into the hangar, where Earthrock Trilobyte tries to hamper their pursuit with his Crystal Walls. Following this is another fight with the berserk Mechaniloid that attacked them earlier. Afterwards, the gang enters the room where Earthrock Trilobyte is fought.
Earthrock Trilobyte has several attacks at his disposal. His main attack has him summon Crystal Walls to crush the player's character. Another has him dash on all fours at the player, stopping at an edge. This can destroy his Crystal Walls. He can also throw purple crystal balls that bounce around the arena. Upon losing half his stamina, Earthrock Trilobyte will barrage the player with Crystal Walls. Earthrock Trilobyte's defeat nets the player access to the Crystal Wall weapon. Earthrock Trilobyte is weak to the Squeeze Bomb, which can blow off his armour.
|~ Earthrock Trilobyte when he uses Crystal Wall.|
|“||Look at this!||„|
|~ Earthrock Trilobyte when he uses Bound Blaster attack.|
|~ Earthrock Trilobyte when he uses his Overdrive Attack.|
|~ Earthrock Trilobyte's last words.|
- Earthrock Trilobyte shares his gimmick of losing his suit of armor with Armored Armadillo and Crystal Snail.
- The entrance to Earthrock Trilobyte's warehouse still contains Crystal Walls after his defeat, but his voice isn't heard. A robot mimicking his powers may be the culprit.
- Earthrock is the only Mega Man X8 boss to curse, and the second one in the Mega Man X series. The first is Double who says the word "damn!" post-defeat and pre-mortim.