Junior was a secondary character from
later episodes of Great Mazinger, and
the chogokin portrayal has become quite
difficult to find. (Near-universal loathing
for the design seems to have kept the
production run to a minimum.) The bats
can be removed from the back, and a missile
can be fired from the elbow of each arm.
Popy originally planned to produce a "popinika"
of the baseball-cap-shaped spacecraft
that forms the cockpit of the robot, but
it never saw actual production.