The bioengineered "Heavy Radioactive Gecko" is a whole new developement in nuclear weapons technology. Using the DNA collected from the 1954 "Tokyo Incident" we have managed to fuse it with gecko DNA to deliver a heavy radioactive creature in a size that doesn't rival buildings. The Heavy Radioactive Gecko is a reusable nuclear weapon, it is completly immune to its own blastwave when at full capacity, and it is unnafected by radiation. It can be airdropped by parachute and on its own find a critical point where it can release a deadly nuclear blast upon an unsuspecting force.

Weight: 1.5 metric tons
Height: 250 centimeters
Maximum nuclear yield: 1 Kiloton

After being used, the creature can be collected and fed radioactive material to rebuild its fuel source.