|This article is about a/an kaijin in Kamen Rider, the original series.|
Armadillong (アルマジロング Arumajirongu, 33, 37, 41 & Rider vs Shocker) – An armadillo monster. His personal emblem was a silhouette of his own face. He was able to turn into a ball and crash into foes with explosive force, and well armored enough to be impervious to Kamen Rider #2's Rider Kick, but his belly did not have armor as strong as his other body parts. Tested by Shocker's Brazilian branch, but sent to Japan to work under Colonel Zol and fight against Kamen Rider #2. In his original test, he slaughtered a family, leading a surviving woman to go after him for revenge. He was destroyed by Kamen Rider #2's Rider Kick on his belly.
Armadillong was resurrected later, episode 37, participating in an operation to kidnap children and test a poisonous gas on them. However, Kazuya Taki saved the kids and released the poisonous gas on Mogurang and his companions, destroying them.
He returned yet again in episode 41, where he faced Kamen Rider #1 to capture him. Afterwards, when Rider #1 was brainwashed and seemingly had defeated Rider #2, he returned, to kill Kamen Rider #1 too, however, Kamen Rider #1 had returned to normal and Rider #2 was still alive. Unable to resist against multiple attacks to his belly, Armadillong was destroyed by Kamen Rider #1.
Armadillong also made a brief return appearance in the monster army of the Kamen Rider vs. Shocker movie, but did not actually have an active participation there.