Zyu2

Zyu2 is a fan coined title given to the footage developed exclusively for the american television show Power Rangers that did not derive from stock footage of the Super Sentai Series Kyoryu Sentai Zyuranger.

Alternate Ending
The original series of the Mighty Morphin Power Rangers was given a 40 episode run, however, due to its unforeseen popularity an alternate ending was given to the last two episodes entitled 'Doomsday'.

Originally, like its Super Sentai couterpart, The Evil Witch Bandora (Rita Repulsa) was going to ressurect her deceased son Kai, who was reportidly going to be named Bubba, using the power of The Great Satan (Lokar). And was going to drive the collossal driving force Dora Talos (Cyclopsis) Instead, the episode was a some-what less dramatic climax, with the the mechanised robot was given to Goldar. And the Rangers, at the end of Doomsday Part II, were giving the option of keeping, or giving up their powers. None of which resigned.

New Costumes
Saban of course was pleased at the ratings of the series, and was eager to create more episodes, however, the series had exhausted all of the monsters used in Kyoryu Sentai Zyuranger. So he contacted Toei Corperation, the company who produces the Super Sentai Series and Rainbow Productions (The company who produces the monsters suits) to produce more new Zyuranger footage. The companies agreed and 25 episodes worth of new costumes were created and in-suit battle and mecha fighting scenes were filmed in Japan. The footage was created and sent to america where it was spliced with American footage in a similar fashion to the rest of the Mighty Morphin Power Rangers before it.