Milestones (Super Sentai)

As a franchise, Super Sentai is constantly evolving and changing, with new ideas and concepts emerging with each series. This is a real-world documentation of the evolution and the milestones in the franchise, showing the changes, advancements and quirks which emerge with each new series since originally starting in 1975.

Himitsu Sentai Gorenger

 * First Sentai series/team
 * First Red/Blue/Yellow/Pink/Green members and team
 * First replacement member (Daita Ooiwa -> Daigorou Kumano)
 * First Sentai hero death (Daigorou Kumano)
 * First team upgrade
 * Longest Sentai series (84 episodes from 1975-1977)

J.A.K.Q. Dengekitai

 * First transformation device (Strengthening Capsules)
 * First yellow-less team
 * First White hero (Soukichi Banba)
 * First actor with multiple Sentai hero roles (Hiroshi Miyauchi)
 * First leader replacement (Gorou Sakurai -> Soukichi Banba)
 * First Sentai team-up movie (J.A.K.Q. Dengekitai vs. Gorenger); only one released in theaters for 32 years
 * Shortest official Sentai series (35 episodes)

Battle Fever J

 * First Black hero (Shirou Akebono)
 * First Orange hero (Battle Cossack)
 * First Sentai mecha (Battle Fever Robo)
 * First major Sentai villainess (Salomé)
 * Only season with two team changes (Diane Martin -> Maria Nagisa; Kensaku Shiraishi -> Makoto Jin)
 * First Sentai series associated with Toei's partnership with Marvel Comics

Denshi Sentai Denziman

 * First portable transformation device (Denzi Ring)
 * First transforming Sentai mecha (Denzi Tiger -> DaiDenzin)
 * First female villain commander (Queen Hedrian)
 * Final season influenced by Toei/Marvel partnership

Taiyou Sentai Sun Vulcan

 * First three-man Sentai team
 * Only Sentai team where all members are male
 * First two-piece combining Sentai Mech (Sun Vulcan Robo)
 * First transformation brace (Vulcan Brace)
 * First and only lasting Red replacement (Ryuusuke Oowashi -> Takayuki Hiba)

Dai Sentai Goggle V

 * First three-piece Sentai mech (Goggle Robo)
 * Only season where mech and transporter (Gogglecaesar) fight together in mech battles.
 * First season where the villains use mechs instead of growing the monster. (Kongs)
 * First of nine-consecutive seasons lead by head-writer Hirohisa Soda.