Neuron Bomb

Neuron Bomb is an object that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It was a device that Dr. Robotnik used to short circuit minds of the Walrus Herd in the Frozen North Sea, making them compliant to Robotnik's commands and in a trance like state.

History
When Rotor Walrus heard his mother on his old radio, he sets out in his Bathysphere in order to find her. He later discovered that his former Walrus Herd were under the control of Robotnik by the effects of the Neuron Bomb and that Robotnik was planning to use them to freeze the entire planet.