* In RealLife, Kohji Moritsugu (Dan) and Yuriko Hishimi (Anne) are both restauranteurs.
* BannedInChina:
** "From Another Planet With Love" was banned in the 1970s after a support group for atomic bomb survivors complained about comparisons between bomb victims and Spehl Aliens.
** In 2011, "Super Weapon R-1" was banned in Japan after the Fukushima Daiichi disaster.
* CreatorBacklash: Director Akio Jissoji always thought the scene between Dan and Alien Metron in "The Targeted Town" was silly, even when he filmed it.
* HeyItsThatGuy:
** Lots of {{Ultraman}} cast members appear from time to time:
*** What's Arashi doing in this team? Really, did he have a twin? [[FridgeBrilliance Or maybe he and Furuhashi are alien clones?]]
*** Fuji plays Sanae, a friend of Anne's, in the controversial Episode 12.
*** In "Who are You?", Captain Muramatsu goes home from work, [[UnPerson only to find nobody recognizes him, not even his wife]]...
*** Ide rides in a submarine in "Envoy from Nonmalto".
*** Dr. Iwamoto is now at TPC (higher headquarters).
** Also, isn't the scientist in "The Lonely Earthling" [[YouLookFamiliar played by the same actor who also plays]] the [[spoiler:Robot Commander android]] in "Nightmare on the Fourth Planet", and [[spoiler:Alien Knackle's human form]] in ''[[{{ReturnOfUltraman}} The Return of Ultraman]]''?
** As far as suit actors go, [[{{Ultraman}} Bin Furuya]] as Amagi.
** [[{{Spectreman}} Kohji Uenishi]] is UltraSeven. [[ReturnOfUltraman Eiichi Kikuchi]] donned the suit in "The Ultra Garrison Goes West" two-parter.
** Dr. Kitamura from Episode 22 and the beginning of Episode 49 turns up as [[ChekhovsGunman that other doctor]] in ''ReturnOfUltraman''
** Chief Yamaoka was played by Susumu Fujita, who appeared in many Kurosawa films such as ''TheHiddenFortress''.
* HeyItsThatVoice:
** In the Spanish dub, Kiriyama is [[{{Film/Superman}} Clark Kent]]! Dan and Anne were [[{{Film/StarWars}} Luke Skywalker and Princess Leia]], respectively (for a while, anyway).
** When [[spoiler:Alien Metron]] returns in ''UltramanMax'', the actor who played his voice in his original appearance reprises his role, even in human form.
* WhatCouldHaveBeen: Was originally supposed to be a more hard sci-fi show similar to LostInSpace called The Ultra Garrison, but TBS urged a rewrite due to being too similar to rival show Captain Ultra, and the show was turned into [[WorkingTitle Ultra Eye]], where Dan was supposed to transform into Redman, who was also [[SpinOffspring Ultraman Junior]]. The Capsule Monsters were supposed to be kaiju from Ultra Q and Ultraman, but Tsuburaya wanted to do more with their budget, so the capsule monsters became new monsters. Ultra Eye was reworked into Ultraseven and the rest is history.
** Among the bizarre rejected ideas, producer Masami Sueyasu proposed the series become a Japanese analog to ''Literature/AliceInWonderland'' combined with ''Film/TheRedBalloon'', writer Akio Jissoji proposed a series revolving around a time traveling family and their everyday lives, Hajime Tsuburaya proposed a new season of Ultraman that basically pandered to the sponsors (think MerchandiseDriven to the Nth degree like today's KamenRider), and Eiji proposed a cross between {{Thunderbirds}} and LostInSpace.
** The Ultra Garrison proposal would have revolved around a team of astronauts and RobotBuddy "John", who lived in a space station called Mother and were Earth's first line of defense against alien invaders. The concept came off as too derisive, and the executives ordered Tsuburaya to rewrite it.
** In addition to UltramanJunior, there would be both good and bad monsters, and good monsters would fight on humanity's side. UltramanGaia saw this idea come to fruition.
** In one draft, Dan would have been half-R-alien (possessing ESP), half-human.
** One of Seven's preliminary costume designs looks similar to Ultraman Mebius.
** Most of those designs lacked an Eye Slugger.
* WorkingTitle: ''Ultra Eye''