Madpoles are evil tadpole-fish enemies appearing in Super Mario 3D World, Super Mario 3D Land and Super Mario 3D World + Bowser's Fury, they are blue in color and are fast in water. Madpoles are happy and adorable when left alone but as soon as Mario or his friends approach the Madpoles, they become irate and start chasing after them in an attempt to kill them. Madpoles always appear in groups and never alone. They tend to swim in the surfaces of lakes and are found commonly in latter parts of the games. Despite their aggressive nature, they are relatively weak and can be defeated with any attack.
- Their name is a combination of the words "Mad" and "Tadpole".