Alien Shilback (シルバック星人 Shirubakku Seijin?) is an alien race that first appeared Ultraman Dyna episode 17 "The Ghost Spaceship". Despite this, these aliens were never shown alive, as they were killed by Zombayu while the rotten corpse of the crew's captain was possessed on a journey from Planet Janarunba to Planet Shilback. Subtitle: Zombie Phantom (ゾンビ怪人 Zonbi Kaijin?)