David Albaladejo (better known by his stage name King Syze) is an underground rapper from Philadelphia, Pennsylvania, of Puerto Rican descent.

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.

He released his first full-length album Syzemology in 2006 and features appearances from fellow Pharaohs Vinnie Paz, 7L & Esoteric, OuterSpace, Reef The Lost Cauze, Des Devious as well as verses from Sabac Red (of Non Phixion), Pumpkinhead and Block McCloud, as well as production from DJ 7L, Jon Doe, Block McCloud, Louis Logic, Crisis Center and Archrival.

The album was known for "Syze lacing his relentless, rapid-fire flow over a slew of spine-tingling gutter tracks" It contained production from Team 707, DJ Waxwork, Skammadix, and MTK.

It was entirely produced by Skammadix and featured Vinnie Paz, Ill Bill, Celph Titled, Esoteric, Planetary and Crypt the Warchild of OuterSpace, Baby Blak, Burke The Jurke, Doap Nixon, Kev Turner, Side Effect, Blacastan, V-Zilla, OuterSpace, Diabolic, Jus Allah, King Magnetic, Reef the Lost Cauze, Apathy, Chris Webby, Lawrence Arnell, Rockie Reyes, Poynt Blanc, M-Dot, and featured cuts by DJ Kwestion.

[4] King Syze grew up in Philadelphia, Pennsylvania, where he found his hip hop influences in his family, friends and school environment, all of which were ripe with young talent.

Syze started rapping at 12 years old, heavily inspired by his older brother, Marcus Albaladejo (Crypt the Warchild) and now brother-in-law Mario Collazo (Planetary), who together make up the Philadelphia hip hop group OuterSpace.

[11] He was then featured on Jedi Mind Tricks fifth studio album Servants in Heaven, Kings in Hell on the track Blitz, inc.' alongside 7L & Esoteric.

[13] Army of the Pharaohs released their debut studio album The Torture Papers the roster at this point contained Apathy, King Syze, Crypt the Warchild, Des Devious, Esoteric, Celph Titled, Chief Kamachi, Planetary, Vinnie Paz, Reef the Lost Cauze and Faez One.

It was officially released 13 June 2006 and contained guest appearances from Block McCloud, Pumpkinhead, Des Devious, OuterSpace, Reef the Lost Cauze, Vinnie Paz and more.

[3] The album saw appearances from fellow Pharaoh soldiers Vinnie Paz, Reef the Lost Cauze, Apathy, Des Devious, and Doap Nixon as well as OuterSpace and Ill Bill of Non Phixion.

It featured Celph Titled, Esoteric, Planetary, Baby Blak, Burke The Jurke, Doap Nixon, Kev Turner Side Effect, Blacastan, V-Zilla, OuterSpace, Diabolic, M-Dot, Jus Allah, King Magnetic, Reef the Lost Cauze, Apathy, Chris Webby, Lawrence Arnell, Rockie Eyes, Poynt Blanc, Crypt the Warchild, Ill Bill, and Vinnie Paz and is fully produced by Skammadix.