Tiger Joe is a tank belonging to the US Army. He,along with his brothers and some other millitary vehicles at the US Army base at Bigg City, is often used to guard things from gangster's such as Johnny Cuba and Hannover,but he has been sent to other countries to fight in wars. His first and only wound so far has been a shell that landed near him during the Vietnam War. He is a good friend with both the Star Fleet and the Z-Stacks,and he is best friends with Ralph,who took him from the factory. His model appears to have been made from a Remco 'Tiger Joe' battery operated tank,hence his name. A tank similar to Tiger Joe appears in Thunderbirds.