Jellybeams are enemies in the New Super Mario Bros. series who resemble jellyfish. In New Super Mario Bros. Wii, they don't really act as enemies as they light your way in the dark cavern level but still cause damage on contact, they move up and down stopping their movements for a short time once they reach the top of their destination, to then go to the opposite direction.


In their first appearance, New Super Mario Bros. Wii, they only appear in the level 8-4. They reappear in New Super Mario Bros. U, where they only appear in the level Deepsea Ruins found in Soda Jungle. However, they do not appear in New Super Luigi U.

Jellybeams can be defeated by fireballs, stars, and can be froze with the Ice Flower. They appear in the retro GCN Sherbet Land in Mario Kart 8.