An example of Q 'created people' can be found in (TNG: "Deja Q"):
With no sign of the Calamarain, or the shuttle, the Enterprise crew assumes they are dead, and Picard suggests that they had seen the last of Q. Q, however, appears on the bridge as a horn-player with a mariachi band, making cigars appear in Picard's and Riker's mouths, and materializing around Riker a pair of scantily-clad women to celebrate. Riker denounces Q's scantily-clad females and states that he doesn't want Qs fantasy women.
The question is: Are these 'real' people or just illusions created by Q?