General Zen is an imperious figure who believes in protocol and exerting his authrority whenever and wherever possible. He will often show respect for his peons but is bitter towards anyone working outside the Ministry of Defense.
Captain Grant was a loyal comrade to General Zen through and through. Despite his hot-headed and sometimes irrational decisions, Grant never lost faith in his superior. However, when Zen was injured by falling debris, Grant disobeyed his orders for the first time so lives could be saved.
Captain Grant also named the General's three jeeps: Muddle, Mayhem, and Filibuster.
The two seemed to have contrary views about the munition contract. During the events of "Munitions", after the General was injured the Thin Controller helped assist him to safety. The General was grateful for the Thin Controller's kindness.