Dennis is a thief who appeared in Captain Jerk. He is obsessed with weapons and collects famous people's socks. In Captain Jerk, Dennis 'stole' a very dangerous weapon in the form of a hot dog by threatening to murder Jasper Dunlop if they didn't show him a way to escape. In the end, Captain Man and Kid Danger capture him by trapping him with the tube.
- He owns a sock that belonged to Jennifer Lawrence.
- Dennis probably has a sock fetish, because he collects socks.