Super Sentai S40E37 - Monarch of the Heavens

Larry discovers a giant Zyuoh Cube and informs the Zyuohgers, but while they are trying to activate it, they must confront the Saguiru Brothers from Team Azald, but somehow when one is defeated, another appear to replace him. When one of them corners Yamato, Bud, the Bird Man reappears, using the Champion's Proof in his possession to transform into a Zyuohger as well.