Skalesh was the former dictator of his home planet, Delossa.

Skalesh was deposed and disassembled by his own people into a raw energy that was imprisoned for eternity. Having been disturbed by the Tenth Doctor and unwittingly freed, Skalesh hitched a ride in the Doctor's TARDIS. Feeding off kinetic energy, Skalesh adopted the Doctor's clothing, creating a new body for himself. His people had long left his home world when he returned to exact his revenge. He was found guilty of a planned invasion of Delossa (now the Madrojar's home planet) and sentenced to eternal imprisonment. (COMIC: Dusty Death / Cold Assassin / Designs of the Dust / A Suitable Showdown)

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