Guard Duck is a militaristic, violent, quick-to-anger duck who is extremely loyal to Rat and Pig. At some point he serves in the armed forces of the US, but it is unclear if he still serves in that capacity. He appears to be on the higher side of the chain of command, as he readily can purchase Air Force helicopters for private use and has ordered air strikes on the homes of individuals he does not like. However, in contrast, he once commanded a naval fleet consisting entirely of a toilet.
- He once became mayor of Albany, California through a military coup.