Pig

Pigs are animals in the Real World. They also appear in the Marioverse, in multiple games. They first appeared in Super Mario Land 2: Six Golden Coins, as bosses known as The Three Little Pigheads, who were three pigs that poked fun at the story of the three little pigs. They next appeared in Paper Mario under the name of Li'l Oinks. These pigs are used to get certain items. Pigs then appeared in Paper Mario: The Thousand Year Door, which Doopliss turning the citizens of Twilight Town into Pigs with the ring of a bell. Doopliss was defeated, and everybody was eventually turned back.