Pesimus was Ridley's brother. When they were younger, he was always the one geting Ridley in trouble. This stopped after Ridley nearly killed him. After Ridley went back to Pyra, Pesimus went with him to SR388. When they were attacked by the X, Pesimus was killed.
He fights just like Ridley, so use super missles.
His skin looks black, which is actully lava hardened into armor.