|This article is about a/an kaijin in Kamen Rider Black RX.|
Elgitron is a black and white robot with the ability to harness electricity. He had two long bowed horns on his head and a sword, all of which served as lightning rods. He and Gatezone pursued a woman named Youko who had a metal that is a part of a puzzle that would release something deadly and ran afoul of Kohtaro. When Gatenzone and Eregitron caught up with them, Kohtaro henshined into Kamen Rider Black RX and fought them with Gatenzone getting the metals. When Youko charged Gatenzone and the spire, it ended up badly damaged by Kohtaro who turned Eregitron's weapon towards it. With Youko falling off the cliff from the recoil, RX became Robo Rider and broke Eregitron's left horn. Robo Rider reverted to RX and destroyed Eregitron with his Revolcane.
Elgitron was later revived by Maribaron as part of the Spirit World Inhumanoid Army.