Radbugs are the result of bugs being mutated by radiation. They have an orb-like main body with a small head and six limbs with a claw on the end of each. When attacking, they leap forward and claw or bite a targeted creature. Apparently they have a set of human-like teeth, two fish-like eyes and an appendage somewhat resembling a tail. These critters are known to roam the wastes; many of them can be found in such radioactive places as Carbon Crater, Secret Vault Warehouse and the Secret Vault.