In the year 2005, a race of alien monsters called Zonders emerge from underground and launch a series of attacks on the city of Tokyo. The only defense against these creatures is the secret agency known as the Gutsy Geoid Guard (or 3G) and their ultimate weapon, the awesome giant robot GaoGaiGar. GaoGaiGar's pilot, Guy Shishio, is a former astronaut who was nearly killed two years before when the Zonders first crashed to earth. Guy's life was spared when a mysterious robot lion called Galeon pulled him from the burning shuttle and brought him to Earth. Guy's father, Leo, then used Galeon's technology to rebuild his shattered son as a cyborg, in the hopes that he could stop the aliens when they appear. Now, with Galeon as its core, GaoGaiGar fights to protect Earth. He is aided by a team of transforming robots and by a young boy named Mamoru, who has the power to purify the Zonders' cores, and seems to be connected to the mysterious Galeon.
 
(Source: Anime News Network)

Following Gutsy Galaxy Guard`s victory over the Zonder Empire and the 31 Primevals, a new threat makes their appearance on Earth. GGG - with Guy Shishio and the newly-constructed GaoFighGar - team up with their French counterpart Chasseur to battle the evil organization BioNet. Among Chasseur`s ranks is Renais Cardiff Shishioh - a former BioNet cyborg with the relentless pursuit of destroying those who took away her humanity. But as GGG and Chasseur fight the BioNet, GGG`s bases around the world are suddenly attacked, and the recently-discovered "Q-Parts" and the original Gao Machines are stolen by Mamoru Amami, who has been abducted and cloned by an even greater threat known as the "Eleven Kings of Sol." Evicted from Earth by the United Nations, GGG must now travel to the far reaches of the galaxy to battle the Eleven Kings of Sol and save Mamoru before it`s too late.
 
(Source: Anime News Network)

The story and mythology of the Braves has already ended, and their star-spanning fable begins...

A crossover between GaoGaiGar and Betterman, set after the events of GaoGaiGar FINAL, using unused concepts from GaoGaiGar Final Project Z. 
 
Note: Includes 5 extra chapters

Following Gutsy Galaxy Guard's victory over the Zonder Empire and the 31 Primevals, a new threat makes their appearance on Earth. GGG - with Guy Shishio and the newly-constructed GaoFighGar - team up with their French counterpart Chasseur to battle the evil organization BioNet. Among Chasseur's ranks is Renais Cardiff Shishioh - a former BioNet cyborg with the relentless pursuit of destroying those who took away her humanity. But as GGG and Chasseur fight the BioNet, GGG's bases around the world are suddenly attacked, and the recently-discovered "Q-Parts" and the original Gao Machines are stolen by Mamoru Amami, who has been abducted and cloned by an even greater threat known as the "Eleven Kings of Sol." Evicted from Earth by the United Nations, GGG must now travel to the far reaches of the galaxy to battle the Eleven Kings of Sol and save Mamoru before it's too late.
 
(Source: Anime News Network)

Picture Drama included in the DVD release of King of Braves GaoGaiGar Final Grand Glorious Gathering to further show the connection between GaoGaiGar and Betterman.

1. GaoGaiGar Number 43.5: Wings of Light and Darkness 
This particular story was also known as "Super Dreadnought Battleship J-Ark" (Chou Dokyuu Senkan J-Ark) 
2. FINAL.00: Evoluder Guy 
(Source: Zonderpedia)

Mikoto Utsugi