Duplet is one of the mercinaries in Black's group. He appears only in S.T.A.L.K.E.R.: Call of Pripyat. The group first appears in the area around Yanov, guarding the scientists bunker. Duplet does not have any background information, nor does he have big story importance.
- (SPOILER) After the player picks up the administrative documents at the Jupiter plant, he is attacked by Black's group, Duplet included.
- Duplet is also the name of a dual barrel shotgun in the Metro 2033 series.