|“||Yes. Whatever you say... That's what you expect to hear from me, right? You know nobody will obey like that, don't you. So why don't you fight as always and force me to give it to you. That's if you have the guts to... Hee Hee Hee Hee...||„|
Mattrex also known as Burn Dinorex in the Japanese version and Mega Man X Legacy Collection 2 re-release is one of the 8 Maverick bosses from Mega Man X5.
Mattrex was a member of Repliforce's disaster prevention team, having been stationed at a volcanic mountain. Without Repliforce's consent he created an illegal weapons warehouse there where he stored various weapons made with magma energy. Because of this, he was one of few Repliforce's members who survived the Repliforce War.
The Maverick Hunters eventually learned Mattrex stored a Booster Engine, which was necessary to power up the Space Shuttle they would use to destroy the Eurasia space colony, so X and Zero are sent there to retrieve it. However, Mattrex immediately assumed the hunters were sent there to retire him and attacked, which ultimately results on his defeat.
Mattrex's fight is a tough one, due to his size and the small room to maneuver. He will jump around and spit fireballs, every now and them jumping into a wall to do a dashing attack. After re reaches half health, he will cover the floor in fire and dash to the other side, causing massive flames to erupt. His weakness is the Wing Spiral.