* RealLifeWritesThePlot: While {{Fake Shemp}}s are common in tokusatsu, Super-1 has only appeared in-suit in recent years because actor Shunsuke Takasugi used his fame to [[https://miketonpei.net/archives/14964 scam]] [[http://punchline.asia/archives/29667 fans]] out of 50m yen[[note]]Roughly 450K U.S. dollars[[/note]], didn't show up to his court hearings when sued, and has "mysteriously" gone missing as of January 2017.
* RoleReprise: Hiroshi Miyauchi vocally reprises his role as [[Series/KamenRiderV3 Shiro Kazami / Kamen Rider V3]] in the ''Super-1'' movie, the only one of the first eight Rider actors to do so.
* WhatCouldHaveBeen
** In reaction to the declining ratings of the [[Series/KamenRiderSkyrider previous series]], a ninth Kamen Rider, named Kamen Rider V9 ala ''Series/KamenRiderV3'', was originally planned to be introduced within this series as an additional hero to Skyrider similar to Rider 2 and Riderman. Ultimately, however, the return of the Seven Legendary Riders in the second half successfully increased viewing figures, thus the ninth Rider was remade to succeed Skyrider in a new show, becoming ''Super-1''.
** Hiroyuki Watanabe, who would later go onto play [[Series/KamenRiderDenO Gaoh]], and Shun Sugata, who later became Film/KamenRiderZX, unsuccessfully auditioned for the titular character's role[[note]]the role of Kazuya Oki, not the role of suit actor[[/note]]. Similar to Creator/MasayaMatsukaze and ''Series/KamenRiderKuuga'', had either one of them gotten the role, it's very easy to imagine that they would've been willing to reprise the role, considering that the former reprised his role as Gaoh in the second ''VideoGame/KamenRiderBattrideWar'' game, and the latter reprised his role as Ryo Murasame in ''Kamen Rider Taisen'', and neither faces the legal issues that Shunsuke faces.
----