Behold! Akatsuki's Two Step Makeover

"Behold! Akatsuki's Two Step Makeover" 見よ！暁の二段変身 (Miyo! Akatsuki no Nidan Henshin) is the first episode of Thunder Mask. It aired on Nippon TV on October 3, 1972.

Plot
When the Devil Dekanda starts his plans on annihilating Earth, he sends down a giant bird-like Kaiju with a soul like a devil named Concorne to show off its powers. Once on Earth, Concorne starts attacking Japan at night and manages to create some damage to the city. When the Science Patrol arrives and starts shooting at Concorne with their guns and bazookas, Devil Dekanda believes that it showed off its powers enough and calls it back. The Science Patrol analyze Concorne’s data and they label it as a “Devil Monster”. They also find out that a document written long ago in a space language predicted Concorne’s rampage and Devil Dekanda’s involvement. The only hope they have is to find the one who wrote the document a long time ago for help: Thunder Mask. As the Science Patrol go to look for Thunder Mask and three jewels called the “Three Stars”, Devil Dekanda sends Concorne out to distract the Science Patrol while he tries to get answers from Dr. Yamano for the whereabouts of one of the stars, but the Doctor declares that he doesn’t know, which results in his death. When Concorne suddenly disappears from the Science Patrol, they later find Dr. Yamano dying. Later, the Science Patrol do manage to find Thunder Mask’s hiding place and the whereabouts of the “Three Stars”, however, Devil Dekanda appears and attempts to kill Thunder Mask while he’s still in hibernating in a capsule. Eventually, Thunder Mask wakes up and does battle against Devil Dekanda. Unable to fight against Thunder Mask, Devil Dekanda calls forth Concorne to fight him. Thunder Mask uses Thunder Two-stage Henshin to turn into a giant and faces off against the Devil Monster. After Thunder Mask uses Thunder Kick, Concorne flies straight up into the air with Thunder Mask clinging on. The two struggle while in the air until they get to the city where they continue their fight. Concorne does some damage to the city during their fight, but Thunder Mask tries to prevent any further damage. Concorne then flies up in the air, but Thunder Mask uses Thunder Shoot and launches a spinning blade that decapitates Concorne in the air, causing its body to partially blow up and fall down from the sky. After the demise of his Devil Monster, Devil Dekanda retreats for now.

Characters and Monsters

 * Thunder Mask
 * Devil Dekanda
 * Concorne