The Remote Flux Overthruster Core Reactor is a unique power source originally used by Marcus Truman as Eagle 1 aboard his fighter plane. Later it was used to manage the power of the unmanned/remote Croc Carrier Zord. Without it, the zord would be unmanageable. The device is duplicated using the powers of the first Reflects Attack Bot so Doctor K could power the zords to create the Zenith Megazord.