Dream Sentai

The Dream Sentai are a group of five members from different Super Sentai teams from the past that appeared in Hyakujuu Sentai Gaoranger. Consisting of Big One, MegaPink, GoYellow, Red Falcon, and GingaBlue. After meeting Soukichi, the G-Phones lead the Gaorangers to the other four. They lectured the Gaorangers on past heroes and helped fight the Orgs and Lost Highness Rakushaasa.

Banba Soukichi (Big One)
Soukichi, disguised as a Buddhist monk, lectured Sae, Soutarou, Kai, and Gaku about how the other members of a team are needed to make a great Red Warrior by making an analogy on how a rose is grown. He is the leader of the Dream Sentai.

Yuusuke Amamiya (Red Falcon)
The Duke Org, Yabaiba, set his foot of Kenji's grave that Yuusuke was visiting (the tombstones were for his former teammates Kenji Tsukigata, Rui Senda, Takuji Yano, and Mari Aikawa) so Tyysyje fought him and the Orgettes. Yuusuke himself met up with and briefly dueled Gaku and lectured him on the other sword experts (among those mentioned are Change Dragon, Dia Jack, Battle France, VulEagle, DynaRed, Red One, Red Flash, Red Mask, Red Turbo, Black Turbo, FiveRed, Red Hawk, Black Condor, TyrannoRanger, RyuuRanger, KibaRanger, NinjaBlue, NinjaRed, OhRed, KingRanger, Red Racer, MegaRed, MegaSilver, GingaRed, GoRed, TimeRed, TimeGreen, TimeFire), showing him that the true sword wasn't the sharpest, but the one that feeds on courage. He served as leader of all the Red heroes when they appeared.

Miku Imamura (MegaPink)
She lectured Sae on the other female warriors of the Super Sentai teams and their shared mastery of disguise and habit of changing their clothing in the blink of an eye (among those mentioned are MomoRanger, GogglePink, DynaPink, Change Mermaid, Change Phoenix, Pink Turbo, PteraRanger, NinjaWhite, OhYellow, OhPink, GoPink, TimePink, Heart Queen, Miss America, DenjiPink, Yellow Four, PinkFive, Yellow Flash, Pink Flash, Yellow Mask, Pink Mask, Blue Dolphin, FiveYellow, FivePink, White Swan, Blue Swallow, HououRanger, Pink Racer, Yellow Racer, MegaYellow, GingaPink), something that Sae had never done before. Tsuetsue chased the two girls to several different locations for personal pleasure, one place being the school that the Megarangers attended, Moroboshi Academy High School.

Gouki (GingaBlue)
After fighting some Orgettes who had disturbed the Ginga Forest, Gouki met Soutarou and lectured him on the Super Sentai's other strong warriors (among those mentioned are KiRanger, Clover King, Battle Cossack, DenjiYellow, DynaYellow, Green Flash, Black Mask, Black Bison, Green Sai, FiveBlue, Yellow Owl, MammothRanger, DragonRanger, NinjaYellow, OhGreen, Green Racer, MegaBlack, GoBlue, TimeYellow), humbly claiming to not be nearly as strong as they are. According to him, true strength comes from the desire to protect what you love.

Daimon Tatsumi (GoYellow)
After being struck by Kai's G-Phone and hurtling Kai, Daimon lectured Kai about the past Sentai technical warriors and their fighting spirit (among those mentioned are AkaRanger, MidoRanger, AoRanger, Spade Ace, Battle Japan, Battle Kenya, DenjiRed, DenjiBlue, DenjiGreen, DenjiYellow, VulShark, GoggleRed, GoggleBlack, GoggleBlue, DynaBlack, DynaBlue, Green Two, Blue Three, Change Griffin, Change Pegasus, Blue Flash, Blue Mask, Yellow Lion, Yellow Turbo, Blue Turbo, FiveBlack, TigerRanger, TriceraRanger, KirinRanger, TenmaRanger, ShishiRanger, NinjaBlack, OhBlue, Blue Racer, MegaBlue, GingaGreen, GingaYellow, GoGreen, TimeBlue), and also taught him how to perform the "Banta-Style Cow's Milk Tornado Drop", which Kai ultimately used on Rakushaasa.

Red Warriors
The red warriors from the twenty four Sentai teams that came before the Gaorangers, briefly appeared to give extra power to defeat Rakushaasa.

Mecha
The robots, animals, jets, machines and vehicles belonging to their respective red heroes also came to fight Rakushaasa.
 * Varidreen
 * Sky Ace
 * Battle Shark
 * Battle Fever Robo
 * Denji Fighter / Daidenjin
 * Jaguar Vulcan
 * Sun Vulcan Robo
 * Gogglecaesar
 * GoggleRobo
 * Dyjupiter
 * DynaRobo
 * BioDragon
 * BioRobo
 * Shuttlebase
 * ChangeRobo
 * Star Condor
 * Flash King
 * Turbo Ranger
 * Great Five
 * Liverobo
 * Jet Falcon
 * Turborobo
 * Turbo GT
 * Fiverobo
 * Sky Alpha
 * Jet Icarus
 * Jet Hawk
 * Daizyujin
 * Guardian Beast Tyrannosaurus
 * Dairen'oh
 * Mythical Chi Beast Ryuuseioh
 * Muteki Shogun
 * Super Stealth Beast God Saruder
 * Ohranger Robo
 * Sky Phoenix
 * RV Robo
 * V-Fire
 * Galaxy Mega
 * Delta Mega
 * Silver Armor King Gingaioh
 * Starbeast GingaLeon
 * Victory Robo
 * 99Machine Red Ladder
 * TimeRobo Alpha
 * V-Rex
 * GaoKing
 * GaoLion
 * GaoEagle
 * GaoShark
 * GaoBison
 * GaoTiger
 * Soul Bird
 * GaoMuscle
 * GaoGorilla
 * GaoEagle
 * GaoBear & GaoPolar
 * GaoBison