- Tenchi Muyo! GXP (天地無用! GXP Tenchi Muyō!, Jī Ekkusu Pī): Galaxy Police Transporter, released in Japan in 2002, is a direct spinoff of Tenchi Muyo OVA. The main character of this 26-episode TV series is Seina Yamada, a boy who is forced by his family to join the Galaxy Police. Unlike all previous Tenchi Muyo! incarnations, which were licensed by Geneon, GXP was licensed in the United States by FUNimation Entertainment (along with the third OVA series) and was released on DVD from March to December 2004 (when Geneon later ended their distribution of DVDs, FUNimation later rescued most of the other Tenchi titles).
- The director of the series was Shinichi Watanabe, the director of Excel Saga and Puni Puni Poemy.
Tenchi Muyo! GXP was originally broadcast in Japan during 2002, where all 26 episodes were initially aired from April 3 to September 25. The episodes were also slightly edited for airing on Japanese TV with some changes in content for the DVD releases.
Tenchi Muyo GXP contains several references to Masaki Kajishima's earlier works, besides Tenchi Muyo!:
- The novels reveal how deeply and direct its connection to Dual! Parallel Trouble Adventure are. It is revealed that Dual occurred up to a billion years prior to the start of the main Tenchi series and after going into space, the cast become the progenitors of what becomes the Great Prehistoric Civilization. Their civilization seeded the galaxy with the human genome and, somehow, recurring cultural norms that result in future worlds, languages, tools, foods, etc. replicating their own.
- Yamada Seina is the direct reincarnation of Kazuki Yotsuga.
- Zinv from GXP is the same Zinv from Dual. Its arch-enemy, HIMC, also appears in later novels.
- D survives into GXP's time by having her astral copied into an AI, which slept inside Zinv until Seina rediscovered it.
- Miki Steinbeck and her father Hiroshi Manada are confirmed to be direct reincarnations of Mitsuki Sanada and Ken Sanada. Fuku and Kirche, are also heavily implied to be direct reincarnations of Yayoi Schwael and Mitsuki Rara by a specific passage in Novel 13, chapter 7.
- In Tenchi OVA 5, Fuku, Miki, and Kirche are voiced by the same voice actors of their counterparts in Dual, D has not not spoken, as it seems her previous voice actor has retired.
- All of Seina's girlfriends/potential-girlfriends and wives tend to follow a repeating astral pattern that parallels the attributes of the four girls in Dual.
- The pattern of Mitsuki Sanada is represented by Kiriko Masaki, Karen, Tsukiko, and others.
- The pattern of Yayoi Schwael is represented by Amane Kaunaq, Gyokuren, Mikami and others.
- The pattern of Mitsuki Rara is represented by Ryoko Balta, Suiren, Ringo and others.
- The pattern of D is represented by Neju Na Melmas, Hakuren, Kuis Panta and others.
- The title of episode 24 is a direct reference to Dual.
- Kazuki Yotsuga shares the same name as Tenchi's great-great-grandfather. If they have a connection beyond their name, it has not yet been revealed.
- The Shank pirate guild (or "Shiunk", depending upon translation) were originally the main villains of the hentai series Spaceship Agga Ruter. They also show up as minor villains in the True Tenchi Muyo! novels, Volume 1: Jurai and Volume 3: Washu.
- In episode 20, Neju comments the giant ants chasing the girls on Jurai might be bugrom (an El Hazard reference).
- When Seiryo Tennan's original good luck pirate ship, Unko was launching first time, the ship is briefly shown firing up its main engine nozzel. The ship's nozzel is parody of Space Cruiser Yamato.
- In the English dubbed version of Tenchi Muyo GXP, the last episode, the original Japanese language theme of "GXP is heard in final scene of the show.
- The anime appears to only last a few months to a year at most, though the novels reveal it covers two years.