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An incubus is species of demon believed to belong to the sayaad race, appearing as the male counterpart to a succubus, though their existence remains unconfirmed.
Incubi were stated to be amongst the Burning Legion's forces by a demon that Aegwynn and Khadgar once encountered.
One of the demons Sargeras fought before his corruption resembles a masculine sayaad and is believed to be an incubus.