Spiny Cheep Cheep

Spiny Cheep Cheeps (also formatted as Spiny Cheep-Cheeps, or "Cheep-cheeps" ) are purple Cheep Cheeps with spikes running down their backs. They are fast swimmers and from New Super Mario Bros. Wii onward, they will chase Mario, like a Rip Van Fish.

Super Mario Bros. 3
Spiny Cheep Cheeps only appear in one level in Super Mario Bros. 3: 7-4. They swim faster than normal Cheep Cheeps. They can be defeated using Hammer Mario's hammers, Fire Mario's fireballs, or by Invincible Mario.

New Super Mario Bros. Wii
Spiny Cheep Cheeps reappear in the Wii game New Super Mario Bros. Wii. They first appear in World 1-4 and later in world 4-1 and 4-4. A single Spiny Cheep Cheep also appears in a secret area in world 8-4. Once it catches sight of Mario, Luigi, or the Toads, it will hunt them down. Though small, the Spiny Cheep Cheep is quite fast and relentless in its chase; more so than the Deep Cheep. They can be frozen using Ice or Penguin Mario's ice balls, but like all spiked enemies in the game, they will not stay frozen for long. Once it unfreezes, it has an angrier look on its face, the same one a Deep Cheep has. This does not affect anything it does.

New Super Mario Bros. 2
Spiny Cheep Cheeps also appear in New Super Mario Bros. 2, where they first appear early in World 1-5. They behave the same way and have the same appearance as in New Super Mario Bros. Wii, except they have an angry look on their faces.

New Super Mario Bros. U
Spiny Cheep Cheeps reappear in the Wii U game New Super Mario Bros. U. Like in past New Super Mario Bros. games, they will chase Mario Luigi and the Toads once they appear on screen.

Super Mario World television series
Spiny Cheep Cheeps (or possibly Porcupuffers) also appear in the Super Mario World television series in the "Fire Sale" episode. Yoshi refers to them as Porcupine Fish, as they pop out of the water and paralyze anyone who touches them. In the episode, Mario, Luigi, Princess Toadstool, and Kootie Pie are paralyzed by the Porcupine Fish.

Yoshi Touch & Go
A very similar fish appears in Yoshi Touch & Go, as it is also blue and spiky; however, the fish enemy's spikes are white, and it is always leaping. They can only be defeated by smacking them with an egg. It is most likely a variant of Flopsy Fish or a Porcupuffer.