David Albaladejo is an underground rapper from Philadelphia, Pennsylvania, of Puerto Rican descent. He is a member of the underground hip hop supergroup Army of the Pharaohs, having featured on all their studio albums. He is known for his frequent collaboration with AOTP members; OuterSpace. Outside of rap, Albaladejo works as a member of a trade union which has inspired the names of many of his studio albums.
Many have likened the witty aggressive flow and opposing mic presence of King Syze to that of Big Pun. King Syze has been featured on notable albums by Jedi Mind Tricks' Visions of Gandhi, Vinnie Paz's God of the Serengeti, 7L & Esoterics DC2: Bars of Death and OuterSpace's Blood and Ashes, Blood Brothers, God's Fury, and My Brother's Keeper as well as prominent features on the current smash full-length Army Of The Pharaohs' The Torture Papers.