|Ally||Mushroom Kingdom, Mario|
|Debut Appearance||Mario is Missing|
|Latest Appearance||Mario Tennis Open|
Penguins are a species of birds that appear in the Mario series. They can be found often in colder areas of games and usually do not not harm Mario, though they will act as obstacles sometimes in his quest. Some penguins will speak with Mario, usually asking for his help or offering to help him in his quest.
 Game Appearances
 The Adventures of Super Mario Bros. 3
They would first be seen in The Adventures of Super Mario Bros. 3 in episode 7 Continents for 7 Koopas. During the events of this episode, Bowser would assign Big Mouth Koopa to take over Antarctica. But for him to be able to do so, he will need to build an Abominable Snowkoopa, that he brings to life with his magic wand. Luigi would steal his wand and use it to destroy the Abominable Snowkoopa and then to make the penguins bigger.
 Nintendo Adventure Books
A penguin by the name of Feldspar would appear in the Adventure Books. He would be the host and referee for the International Mushroom Games in Leaping Lizards and does a poor job as he ignores dirty ploys.
 Mario is Missing!
Penguins would appear for the PC version of Mario is Missing! as part of the background for Antarctica.
 Wario Land: Super Mario Land 3
 Donkey Kong
They would appear as enemies in Donkey Kong for the Game Boy. They could be found on the Iceberg in stage 7-3 and will kill Mario if he runs into them. He can also pick them up and throw them at other enemies.
 Super Mario Series
 Super Mario 64
Penguins would return in Super Mario 64 in Cool Cool Mountain. The Penguin would lose her baby Tuxie and Mario will have to find her. Once Mario has found and returned her, he will be rewarded a Power Star. In another Star Mission, he will need to race another Penguin down a long, icy slide and make it to the finish line before the Penguin does if he wants to collect a Power Star. In Snowman's Land, a Penguin would appear near the giant snowman head and Mario will need to sneak around him to avoid being blown off the platform.
 Super Mario Galaxy
They would appear in Super Mario Galaxy on the Loopdeeloop Galaxy, Sea Slide Galaxy, Drip Drop Galaxy, Buoy Base Galaxy, Loopdeeswoop Galaxy and Beach Bowl Galaxy. There would also be one penguin in Freezeflame Galaxy and one elder penguin in Drio Drop Galaxy, Bigmouth Galaxy and Sea Slide Galaxy. They will challenge Mario to usually a water challenge like surfing, collecting shells or just racing them. They're friendly with Mario and will give him tips on how to swim or where Silver Stars can be found. In the Loopdeeloop Galaxy and Loopdeeswoop Galaxy, they will surf on Manta Rays. Instead of living in cold climates, these penguins can be found in more tropical areas.
 Super Mario Galaxy 2
They would appear in Super Mario Galaxy 2 in Cosmic Cove Galaxy. They will only appear in this Galaxy and appear with Penguru and Coach. In the first level, they will give Mario hints on how to swim and lead him along. In the second level of the Galaxy, a Luma is trapped in a cage and the Penguins have set out to find the key. Mario will need to find the right way and give him hints on how to swim. After completing the mission, a penguin will appear on Starship Mario.
 Mario Kart Series
 Mario Kart 64
 Mario Kart: Super Circuit
 Mario Kart 7
 Mario Pinball Land
They would appear in the Ice World in Mario Pinball Land. When Mario hits one of them, the penguin will slip down to the icy floor. If he hits them again, then they will lay down on the floor and earn 2,000 points.
 Mario Party series
They would appear in the Mario Party Series in the minigames.
 Mario Party 4
A penguin would be found in the minigame Lab Brats. It would be one of the friends in the game.
 Mario Party Advance
Mario Party Advance would a penguin found in the Ice Casino of Shroom City. He is attempting to save money to buy a ring for his girlfriend, Pengwen, but lost all of his money from playing Drop 'em. When the player wins, he thanks the player by giving them a Gaddget and the mini-game. At the end, it says they can't afford the wedding ring.
 Mario Party 8
One penguin is a racer in Moped Mayhem.
 Mario Strikers Charged
Penguins can be found in Mario Strikers Charged in the audience.
 Mario & Sonic at the Olympic Winter Games
 Mario Sports Mix
 Mario Tennis Open
Penguins would appear on the court Penguin Iceberg as spectators.