Twin Diamonds

Someone will surely come along later and fill this out properly, but for posterity sake this RPG was about a mysterious planet appearing in the galaxy, so a small team was sent to investigate while flying two giant diamond shaped spaceships.

They discovered the planet was in fact a giant space head, which promptly vanished as mysteriously as it had arrived.

Characters involved were Vanessa Cuaron and Ty-Ren (who subsequently appeared in the sequel Message on Azriel V); Caymen, professional flirter and nunchuck enthusiast; and Anthony Spade the mission's resident scumbag.