The Spiders resemble yellow and purple-striped mechanical tarantulas. They each have a yellow body with purple stripes on it, a large yellow and round abdomen, three pairs of yellow legs with purple joints, a purple head, two cartoonish black eyes, and large fangs. They also has gray spikes all over their bodies.
In Sonic 3D Blast, the Spiders are encountered exclusively as enemies in Spring Stadium Zone. In gameplay, they simply shuffle back and forth along a straight diagonal within their designated areas. However, they possess no forms of attack, meaning they can only harm Sonic if he walks straight into them.
The spikes on the Spiders are purely cosmetic, meaning they will pose no hazard when Sonic attacks them with a Spin Attack, Spin Dash or Spin Jump. Upon the Spiders' destruction, they release their respective power source, a green Flicky, which can be picked up by Sonic.
- This Badnik was given no official name upon or after the release of Sonic 3D Blast. However, its name was revealed in the Debug Mode for the unofficial Sonic 3D Blast: Director's Cut video game developed by Jon Burton, the lead programmer of the Genesis version of Sonic 3D Blast. When asked about its validity, Burton that this Badnik's name was used in the original game.