Shazar was a power-hungry fool who tried to take over the Earth, years before the Mattress made it cool. For his insolence, the Time Lords sent him away from Jewel, which as we all know is the Time Lords' home planet, and left him trapped in a bottle on Earth. He could only be released from the bottle after it was vigorously stroked (one wonders what his owners were doing with the bottle to get him out the first time). Anyway, Shazar tries to trap Four and Sarah, and loan them to the Daleks. After hooking up Sarah to a mind-control tentacle machine, and pleading with the Time Lords that Four is the real traitor to the Daleks (which the Time Lords actually fall for somehow), Shazar is defeated when Four blows up the Daleks. The Time Lords leave him on a primitive planet, with a tiny TARDIS.