Spiker (Sonic 3)

Spiker, known as Togemane (トゲマネ) in the Japanese manual, is a spike enemy found among the real spikes of Sonic 3's Marble Garden Zone. Normally they appear as normal spikes. They have a slight visual difference from real spikes when the player isn't near, making them easy to detect. But when the player comes near them, they shoot out from the ground, revealing their entire body, and proceed to shoot bullets, one from the left and one from the right. It will then return to its original state, appearing as regular spikes.

It is possible to jump on this guy's spikes; they won't hurt the player. But instead of destroying the enemy, this will cause the player to bounce off the spikes as if they were a spring. So how can it be destroyed? The delay between it coming out and shooting bullets should be enough time to spindash into them.