Tsuruhime
Tsuruhime was the 24th protector of the Seal Door and the youngest team leader of the Kakurangers who fought the Youkai as Ninja White. Years later, Tsuruhime sights the Gokai Galleon at night. Originally, she was going to meet the Gokaigers personally, but instead, she learns that they have Ninjaman to help them fight against the Zangyack, so she decides to leave the rest to Ninjaman before she leaves.

Takayuki Hiba
Takayuki Hiba was a colleague of Ryusuke Ohwashi, who was the 1st Vul Eagle, who joined the Guardians of World Peace to fight the Black Magma as Vul Eagle II of Sun Vulcan, after Ohwashi left to pursue space shuttle research for NASA. After Basco's demise, Hiba appears to the Gokaigers in Episode 49, granting the Gokaigers the ability to access the greater power of Sun Vulcan.

Remi Hoshikawa
Remi Hoshikawa was a music teacher who specialized in kung fu, the twin sister of Fumiya, known as Five Black, and the youngest of the Hoshikawa siblings who fought the Silver Imperial Army Zone as Five Yellow of the Fiveman. After Basco's demise, Remi appears to the Gokaigers in Episode 49 and grants the greater power of Fivemen.

Sho Hayate
Sho Hayate was formerly a Japanese Army Ranger and a narcissistic womanizer who joined Earth Defense Force to battle the Great Star League Gozma as Change Gryphon. Years later, Basco stole the greater power of Changeman from Hayate. Then Hayate later contacted Oh Red to to alert him of Basco's actions. After Basco's demise, Hayate appears in Episode 49, granting them the greater power of Changeman.

Akira
Akira was a Chinese boxer and a straight sword expert who was trained by Commander Sanjuro Sugata to obtain the Aura Power as Blue Mask of the Maskman to battle the menace of the Underground Empire Tube. After Basco's demise, Akira appears in Episode 49 and grants the crew the ability to access the greater power of Maskman.

Dai
Dai was abducted when he was just a child to be used as a guinea pig by the Reconstructive Experiment Empire Mess, but was rescued by the people of Planet Flash along with 4 other children. With his friends, he fought as Green Flash to stop Mess from conquering Earth. After Basco's demise, Dai appears in Episode 49 and grants them the greater power of Flashman.

Goushi
Sharma Tribe Knight Goushi was frozen with four other warriors to fight Bandora, who was released from her imprisionment. He fought as Mammoth Ranger. He comes to Gai in Episode 50 to convince him to use the wish of the Greatest Treasure in the universe which will erase all Super Sentai existance and defeat the Zangyack. Gai used the Armored Tyrannoranger power thanks to Goushi.

Miu Sutou
Miu Sutou fought alongside her brother as Go-On Silver as part of the dynamic Go-On Wings to fight the Gaiarc. She appeared in the Ghost Ship movie along with the G3 Princess. She later cameos in Episode 51.

Shouji Tenjusei
Shouji Tenjusei fought as Tenma Ranger of the Dairanger. He later cameos in Episode 51.

Shouji Tenjusei
Kazu Tenijsei fought as Kirin Ranger of the Dairanger. He later cameos in Episode 51.

Houka Ozu
Houka Ozu fought as MagiPink of the Magirangers. She later cameos in Episode 51.

Shou Tatsumi
Shou Tatsumi fought with his siblings against the Psyma Siblings as Go Green. He later cameos in Episode 51.

Past Sentai 1-14 | 18-30 | 31-45 | 45-51 | 199 Heroes