Otacon, real name Hal Emmerich, is a video game character from the Metal Gear series. He appears in Metal Gear Solid, Metal Gear Solid 2: Sons of Liberty, and Metal Gear Solid 4: Guns of the Patriots.
Metal Gear Solid, commonly abbreviated MGS, is an action-infiltration video game produced and directed by Hideo Kojima, developed and published by Konami, and released in 1998 for PlayStation. Third installment in the Metal Gear series, the game follows Metal Gear 2: Solid Snake and precedes Metal Gear Solid 2: Sons of Liberty.
