Earthrock Trilobyte

Earthrock Trilobyte, known as Earthrock Torirovich (アースロック・トリロビッチ) in Japan, is a Reploid from Mega Man X8 based on a trilobite. He was in charge of the Rare Metal mine in Metal Valley, which has minerals essential to space development used by the Jakob project. When he became a Maverick, he provoked a rebellion in Metal Valley and giving the minerals extracted to Sigma. In the entrance of a warehouse, he tries to stop the Maverick Hunters with Crystal Walls before the battle against him.

The Crystal Walls are his main attack, and in Overdrive, he sends waves of them. After depleting a portion of his energy, he will also start to shoot three Bound Blasters (albeit smaller than the versions that Axl gains) that stay for some time. His weakness are the weapons gained from Gravity Antonion. In fact, they can break his shell, making him even easier to defeat.

Stage enemies
Enemies in Earthrock Trilobyte's stage, Metal Valley:
 * Sub-boss: Yellow Brontes
 * Bulbrite
 * Guard Generator
 * Met
 * Metall Ride
 * Moledig
 * Spiky
 * Megabyoall

Trivia

 * After Earthrock Trilobyte's defeat, Crystal Walls will still appear in the entrance of the warehouse, but his voice isn't heard. It's possible that the walls are used by a unseen new generation Reploid copying him.
 * The Metal Valley stage is located in North America, possibly in Canada.
 * Earthrock Trilobyte bears a resemblance with Crystal Snail, both being the only reploids whose "shell" can be blown, both also using crystal based attacks, as well as both being weak towards gravity and magnetism respectively, which are similar phenomena.