Spikes are lizard creatures who debuted in Super Mario Bros. 3. Originally, they could cough up spiked balls from their mouths, but from New Super Mario Bros. Wii onwards, they now throw spiked balls instead.
Newer Super Mario Bros. Wii
In Newer Super Mario Bros. Wii, Spikes are uncommon enemies, mainly found in the levels of Rubble Ruins. They can be defeated with fireballs, iceballs, ground pound, the use of a Super Star and a Hammer Suit.
Newer Super Mario Bros. DS
Normal Spikes do not appear in Newer Super Mario Bros. DS, considering they didn't appear either in the original New Super Mario Bros. game, but Snow Spikes do, mainly in the levels of Moonview Glacier.
Types of Spikes
They are five types of Spikes in the game, including the normal variant.
Spike: Normal Spikes themselves.
Stone Spike: Stone Spikes are blue and toss spiked balls made out of stone. They occasionally appear in Mushroom Peaks.