The article discusses early modern English plays from the 1590s to the 1610s, set in or referring to the Mediterranean, which feature Black African characters in marginal roles. These characters are ‘spectral’ in that they have no speaking part but appear briefly as attendants, servants, musicians, or indeed slaves. The article argues that their spectrality evokes the presence of Black African slaves in the Mediterranean, which has often been ignored in Early Modern Studies. However, through these characters Black slavery is turned into a mere spectacle, performed for the gaze of the theatre audience in early modern London.