'''Duon''' is a boss in the Supspace[[Subspace Emissary mode]] of the game ''[[Super Smash Bros. Brawl]]'', where it is located atop the [[Battleship Halberd Bridge]]. In the game, it is fought by [[SolidFox SnakeMcCloud|SnakeFox]], [[PrincessFalco PeachLombardi|PeachFalco]], [[SheikSolid Snake|Snake]], [[ZeldaLucario]], [[Fox McCloud|FoxZelda]], /[[Meta KnightSheik]], and [[LucarioPrincess Peach|Peach]]. It is actually two robots in one- a pink one and a blue one fused together. After Snake had kicked all thethrown [[Mr. Game & Watch]]es out of the window[[Halberd]]'s control room, outside onto the bridge where Sheik/Zelda, Peach, and Fox stand. The Mr. Game &and Watches hadland, turnedbut intoare then revealed to be [[Shadow BugBugs]]s. whichThey then formedturn into Duon, which Fox, Sheik, and Peach get ready to battle. AfterLucario and Snake jump from the teamcontrol defeatedroom's Duon,window Duonand transformedland intobehind athe Mrthree. GameAn &[[Arwing]] Watchflies trophyoverhead whichof Peachthe revived.five and Duon, isand foughtFalco laterejects infrom it. All battle and win; and as this happens, [[The GreatMeta MazeKnight]] andregains hascontrol of the sameHalberd, attackswhile the Duon is dertroyed, and after being destroyed, Mr. Game and Watch's trophy appears.
Its' attacks involve spinning rapidly, firing a barrage of missiles, crushing the player by jumping, and shooting lasers in a circular pattern, amongst other attacks.