Tankard "Tank" Muddlefoot is the eldest son of Herb and Binkie Muddlefoot, the older brother on Honker and an antagonist in the 1991-1992 series Darkwing Duck. He was voiced by Dana Hill.
He lives with his parents and brother in St. Canard and is neighbours with Drake Mallard (the alter ego of Darkwing Duck). Herb and Binkie are unaware of Tank's behaviour towards Honker and Drake. Unlike Gossalyn, Tank can get away with anything with his patents.
He only appears in the first ABC Saturday morning season and during the Fall run of the syndicated series. He made 14 appearances in the series before being dropped from the show as he was considered redundant by producer Tad Stones.