Marp was the leader of a small band of Orcs who attacked Corso's Chasm at the urging of Grumsh and Infernus in order to claim one of the magic spoons. After losing a duel to the death with Little One, Marp's band dissolved, with his sorceror Dor being hunted down and killed and his rogue(?) Naf fleeing into the desert.
At the time of his death, Marp was in possession of a fine Eladrin sword, which Little One subsequently claimed. It is unknown how he came upon this blade, but it presumably involved violence.
He also had some pretty impressive armour.