Biot-savartians have large spikes on their shoulders (similar to horseshoe magnets), crab-like claws, and two-toed feet. Their heads are made of silver metal, have large, narrow eyes that can change size and are outlined in a white-blue glow. This head floats above their body, signifying their magnetism. Their voices also sound robotic. Wherever the head goes, the body follows, similar to a Polymorph's Anti-Gravity Projector. Their bodies are made of living alien metal.