Takes place after the final defeat of the Dinosaur Empire and the death of Musashi Tomoe in the original Getter Robo series.
Dr. Saotome, creator of Getter Robo, fears that the peace the Getter Robo team has won will be short lived and that an even greater enemies would appear. Dr. Saotome's fears are justified when the militaristic Hyakki (or "Hundred demons") Empire appears, but Dr. Saotome is prepared with the creation of an even more powerful Getter Robo, Getter Robo G and a new Getter Robo base. Also with Musashi Tomoe dead, Dr. Saotome needs a third pilot which he finds in baseball player Benkei Kuruma.
(Source: Wikipedia)+ More
Characters & Voice Actors

Jin, Hayato
Main
Yamada, Keaton
Japanese
Kurama, Benkei
Main
Yanami, Jouji
Japanese
Nagare, Ryouma
Main
Kamiya, Akira
Japanese
Professor Saotome
Supporting
Tomita, Kousei
Japanese
Saotome, Genki
Supporting
Kagawa, Kouko
Japanese
Saotome, Michiru
SupportingRecommended for you
Deca-Dence
TV
23m
Digimon: The Movie
Movie
20m
Dragon Ball Z: Fusion Reborn
Movie
55m
Girls & Panzer
TV
24m
Hokuto no Ken: Raoh Gaiden Gekitou-hen
Movie
89m
Initial D Battle Stage
OVA
52m
Fantastic Children
TV
24m
Heroic Age
TV
23m
High School DxD New
TV
26m
Zatch Bell!
TV
23m
Macross Zero
OVA
30m
Boruto: Naruto the Movie
Movie
95m
Kimagure Orange☆Road
TV
25m
Black Butler Special
Special
26m