Danger Mouse Season 6 Episode 4 Hear! Hear! Episode Title:Hear! Hear!.Episode Description:Greenback has a device that transmits waves to brainwash people. He brainwashes Colonel K to send Danger Mouse and Penfold on a mission to the South Pole, where they have trouble with a mechanical wild goose that lays explosive eggs. Danger Mouse realizes they've been tricked. On the way to Greenback's lair, Danger Mouse gets brainwashed as well, but Penfold, who has been hard of hearing the entire episode, seems to be immune. Stiletto chases down Penfold, but Penfold falls onto the device and turns it off. It is later revealed that Penfold has been wearing ear plugs.