Ultraseven 21

Ultraseven 21 ("two-one") and his companion, Ultraman Neos, were created not for a specific television series or movie, but for an amusement park show (there was a rumor of plans for a show featuring Ultraman Neos and Ultraseven 21, but that show has not yet materialized as of this writing).

According to a pamphlet from the 30th Anniversary Ultraman Festival, the particulars on Ultraseven 21 are:

   "Ultra Seven Two One: Height 56 m, weight 57000 tonnes.  A member of 
   the 'Space Garrison,' assigned to the 'Space Security Department.'  
   With the ability to change his size at will, and move about at 
   earthling size, he can change from microscopic to a height of more than 
   200 meters."  His powers include the "Adrium Beam," the "Velzard" (the 
   "Two One Slugger"), "Ultra X Eyes," and "Ultra Jumping."