It Raged War on Amulteun!

Sevelenx is the brother rival to Amulteun, as Sevelenx was banished to the Perdition Dimension for waging war on Amulteun to steal his power. Sevelenx is significantly larger than Amulteun, but is also quite a bit weaker. This is because when Auraclateun banished it for causing unnecessary chaos, it was stripped of its abilities. Sevelenx feeds on violence and anger, and grows stronger by absorbing the negative Origin Energy produced in the process. Therefore, most Carahnians will keep an idol of Sevelenx in a place of peace and relaxation to keep it weak with the belief that positive vibes will extinguish it. Sevelenx also created Garroskull, a large Oracle Titan that was meant to keep watch on the above world, and cause violence for Sevelenx to feed on. Where Garroskull is now is a mystery. 

Ability: Violence Effect - Upon entering a battle, this Pokemon's attack increases by 1 stage, and its defense decreases by 1 stage. If this Pokemon is hit with a super effective move and survives, the next move will be a one-hit KO move.