There was a black market selling alien species on Earth in the 21st century. John Harrison paid millions for a group of Skullion slaves who had crash landed in Central Asia. They were brought across Europe and then across the English Channel. (TV: The Man Who Never Was)

Bloorm Vungah Bart Slitheen, Dax Fex Fize Slitheen and Korst Gogg Thek Lutiven-Day Slitheen were planning to sell Luke Smith's telekinetic energy on the Energies Black Market on Antara IV, but couldn't fulfil their plans because Luke escaped. (PROSE: The Lost Boy)

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