Snake is an enemy Badnik encountered on Flickies' Island in Green Grove Zone, the first level of Sonic 3D: Flickies' Island for the Mega Drive and Sega Saturn.
This Badnik is resembles leaping robotic caterpillar or snake. Its head is its weak spot. It spends much of its time underground, but the locations it will pop up are easily identified in the form of two dark pits which it jumps between. Attempting to defeat the Snake with a Spin Jump while it's in the air may prove difficult; mistime the leap and Sonic may end up losing his Rings (and Flickies) by connecting with the spiked body. A more cunning method is to charge up a Spin Dash right on top of the hole; the Snake will dive right into the spinning hedgehog and be destroyed, releasing its organic battery power source, a red Flicky.
The name of this Badnik is conjectural, as no official name has been given to it. The name comes from the level editor in a development build of Sonic 3D that is included as a bonus feature in Sonic 3D: Director's Cut. Jon Burton has confirmed that the name was used in the original game.