Quillam was the technical director and principal divisor of programs on Varos. He was also the controller of everything that happened in the Punishment Dome.

He had a particular interest in experimenting with a transmogrifier, which mutated its victims according to their own unconscious wishes. He had mutilated his own face by experimenting with it and wore a mask which covered one eye.

Quillam subjected Peri Brown and Areta to the transmogrifier, which began mutating them into a bird and a reptile, respectively, but the Sixth Doctor rescued them. He and the Chief Officer were later killed by deadly vines in the Punishment Dome. (TV: Vengeance on Varos)

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