Kentaro Matsumoto, trained in the martial art of jeet-kune-do he spends most of his days trying to act normal and average but whenever he discovers a mecha in his family's estate he discovers he is now the last thing standing between his world and an alien sovereign witch wants nothing more than to control his planet but he's not alone.
Kenshai haruko he is the current master of the fist of rolling thunder coming down the mountain a school who teaches the art of Gō-jyū ryu karate he is the leader of earth's military and the commander of the Gaurdian force his machine the Thunderbird is the earths mightiest weapon until he encounter's kentaro and his Daishin-Oh now he must trim the boy to overcome his own self doubts in order for him to truly become a Guardian master.
Mitsuki kurama, the adopted daughter of kenshai haruko she is a disciple of master Wade chuhai and practices the art of the Enseiken her guardian is Hi'Ten Sazuka and she is in charge of The fifth Earth defense force Japanese division she loves Kentaro but she is unsure wether or not he can beat the enemy
Until he passes her father's tests.
President keiji Matsumoto, the richest man in the world and the best fighter in the known world he has trained His son kentaro since he Was a child and with his fortune has developed multiple mobile weapons for the earth defense force including the super robots known as guardians.
Emperor naga nagagoya XIII he is the leader of the nagagoiya sovereign who plan on conquering earth
He plans on doing so with his advanced Solarium Fighters.
The advanced solarium fighters Six of the toughest fighters from across the galaxy made into Generals by emperor nagagoya
Kou goji the master of the solar karate style Taiyo-shin Kai his robot is the Eclipse.
Mu goujyo the master of an ancient fighting style although it resembles modern day Muay Thai however it use's the heavy emphasis on the use of straight and cross punches his machine the reverse whirlwind is armed with his patented twister knuckles
Toppo giros big mean and heavy he uses the martial art of nova wrestling his machine the Mammoth is built 3.x bigger than any robot and armed with a colossal club.
Ailena Vader the lone femal fighter of the group she fights using her own variant of the eagle claw witch infuses the attacks of the tiger her fighting style is Fearsome and her machine the blood doll is the fastest machine in the solarium fighters.
Tai 36 a android built with a mastery of the art of wing chun he does not have a machine rather he becomes his own machine with his growing technique becoming Tai 36 magnum X.
Maximus Boone this space cowboy is trained in the art of Boxing and his machine Gigaton G is the strongest of the three ace generals however he believes in justice and is actually a member of the former space republic of Nu haven in fact his machine was built by the time of Nu Haven's special infiltration of the sovereign's Government He finds a trustworthy ally and friendly rivalry in kentaro.
Galavant master of the art of Hung gar he is known for his indiscriminate nature towards all life as being worthy he plans to use this as a front to gather troops across the universe to destroy the sovereignty.
The earth defense force mobile squadron.
A ragtag group of individuals each with their own stories of the war with the sovereign they pilot the real robots called ISNG or Iron space Navy Gears these machines are built using the most advanced technology of the Earth equipped with the Delta Computer System they have the ability to learn from their opponents and also transfer that data back to the Base the main forces use the ETM-13 Viper while the ace's are given much more effective machines such as the hysteria and the commanders are given the Advanced crafts of Personal units the commanders are also fighters who have proven to hold their own against keiji in the VR mech assault Training simulation Pod.
The Guardians right now there are only three mentioned Daishin-Oh thunderbird and Hi'Ten sazuka.but soon more will be added
Azusa tsubaki the daughter of a kitsune and an unnamed client of the Matsumoto industries she is the maidservant of the family.
Laura-lie hausenfaust she is the daughter of victor hausenfuast and Leah van Croft she is a talented fencer who wields a gun-blade saber called Charlemagne she also has a secret crush on kentaro and is his friend.
Mitsuki yamamoto the daughter of the dragon emperor she is engaged to marry Kentaro she likes him and is very protective of him to the point of sadistic nature she practices her family's secret martial art witch resembles kenpo but use's bajiquan as it's basis a beauty who all boys want she causes Kentaro a lot of trouble.