Tyssan's leadership in organizing a rebellion against Movellan control to regain crew autonomy

Tyssan and an escaped prisoner ambush Movellan Lan while he crushes rocks, stripping him of his control unit with practiced ease. The abrupt removal of Lan’s command ability sends him …

As Agella retrieves Lan’s discarded communicator outside the Nova Device, Lan intercepts her and strips her of the control unit, forcing her into a brief submission. Tyssan and the freed …

The Doctor stages a rebellion against the Movellans, seizing control units and disabling their robotic allies to wrest the ship from Movellan hands. With the spacecraft now theirs, the Doctor …