The smartest and the grumpiest of the first three Roborgs, Bun-E and his Ranger partner Rhea don't get along quite a bit until he's kidnapped by Toran and stripped with a bomb Rescue Mission. When Bun-E is saved, Rhea shows she cares for her Roborg and the two must put aside their differences. Bun-E serves as the head of the Rabbit Busterzord, and can also merge with the Yellow Spy Ranger so she can morph into the Yellow Super Spy Ranger when she uses the Vortex Visor. Bun-E has the most faith in his ranger partner Rhea.