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The Original episode 18 was an episode that translates to "Commander Makara's Promotion". However this was another flashback episode in Japan. For the English adaption, elements from the original episode 18 is combined with the next episode; thus creating this episode.
After X-Bomber loses its oxygen Lamia sees Shiro and Hercules on the floor in the bridge, and then tells Kirara to take them to sick bay. But in a previous scene Hercules passes out in the engine room whilst helping PPA.
X Bomber is in the title and it was also the original Japanese name for the show which was changed to Star Fleet for the UK market.
It is revealed that Doctor Ben's robot's name is PPA, which stands for 'perfectly programmed android'.
The English version's theme song was done by Paul Bliss of The Moody Blues, and was also famously covered by Queen member Brian May and Van Halen guitarist Eddie Van Halen. This was released under the name Star Fleet Project.