Turbo Spiker, known as Yadorin Jet (ヤドリンジェット) in Japan, is a hermit crab-type badnik created by Doctor Robotnik, which appears at Hydrocity Zone in Sonic the Hedgehog 3. Turbo Spiker appears to be a synthesis of two previous badniks: Spikes from the original Sonic the Hedgehog and Spiker from Sonic the Hedgehog 2.
Turbo Spiker will drive back and forth waiting for the player to approach. If the player tries to jump over it, Turbo Spiker will fire its spike rocket at them very quickly. It then becomes vulnerable and easy to destroy.
- The Japanese name of this Badnik, Yadorin Jet, is derived from the Japanese word for hermit crab, Yadokari. "Yadorin" is the Japanese name of Spikes.