Big Mickey first speaks in the episode Munitions, in which he loads the naval tramper Kraka-Toa with explosives from the Z-Stacks. The last load he was unloading was Zorran's.

When Bluenose arrived and asserted that his load was before Zorran's, Big Mickey was still in the process of unloading Zorran's barge, which would have been dangerous to move for that reason. Bluenose bellowed orders at Big Mickey to give priority to him and forced his way into Zorran's unsafe barge, causing Big Mickey's 