Z Gundam (Z stands for Zeta) was a televised anime on Japanese TV during 1984-1985, following up the original series with a whole new set of characters and machines. The robot of the same name was the main piece of hardware in the show. This new show also introduced the "transformation" concept to Gundam, and the Zeta does an impressive one, switching from robot mode to "Wave Rider" mode in the blink of an eye. We've got the mottarian blog to thank for this great Gundam papercraft. Follow the link below for the goods.
Zeta Gundam Papercraft Bust [mottarian]