Created by Cosgrove Hall in 1993 and lasting for two seasons, Avenger Penguins seemed to be made as an Affectionate Parody of the Teenage Mutant Samurai Wombats trope. It revolved around a trio of motorcycling penguins — Marlon, the brash leader, Rocky, a large penguin lacking in brains, and Bluey, a small penguin that spoke in a nearly indechiperable language. When they weren't challenging the 'Stink Brothers' or hanging out at their favourite ice cream joint, they were trying to stop evil genius Caractacus P Doom (no relation), along with his henchman Harry Slime, from trying to Take Over the World.
Aliens Speaking English: Mildy subverted, an alien speaks in a strange language only Bluey can understand, but some of what it says can be recognised as a variation on English
America Takes Over the World: Implied in the first episode, "The President is a Fish", where Doom plans to replace the President of "The United Republics of the World", who is a parody of several American Presidents rolled into one.
City with No Name: It's simply called "Big City". In The Future seen in "The 23rd Century", it becomes either "Mega City" (according to the signs) or "Mega-Big City" (judging from the dialogue). However, it's claimed to be an Expy of Salford. Yes, the one in Greater Manchester.
Doom: Curse you, penguins! Curse you! And remember this: I'm going to get you. Surely as the day is dark, and the night is long— er, the day is...night, and the long is— er, no, the dark is the...day? Oh whatever! I'LL! GET! YOU!
Dumb Is Good: Rocky, the dumb penguin, is usually cheerful and chipper, while Marlon, who is smarter, is more cynical and grumpy. Likewise, Harry Slime, who is quite stupid, is also less evil than the genius Doom.
Easily Conquered World: After Marlon is disposed with in 'I Married An Android', Doom takes over the world quite quickly.
Species Surname: In "The Hog Jamboree", Marlon's full name is given as Marlon Penguin.
Status Quo Is God: The first season may have ended with Slime becoming good and Doom on Mars, but at the beginning of the second season, the former was inexplicably evil again and Doom was back on earth.
Stealth in Space: Parodied. In 'The 23rd Century', the Enterprise expy uses its 'cloaking device', which consists of a robotic arm coming out of the side and dropping a black tablecloth with stars painted on it over the ship. It works.