Full Name: Jun Grant Human Male (12 years old) Metal Breath User (A bracer that only the chosen can wear, capable of sealing or summoning Metal Cardbots) Personality: Kind and altruistic Best friends with Blue Cop

[Former] Star Guardian (Elite unit of Planet Machina) Metal Cardbot Male Main Color: Blue Weapon Card: Justice Gauntlet (A gauntlet equipped on the arm) Vehicle Mode: Police Car Personality: A classic protagonist type with a cool head but a warm heart

Captain of the Speranza Metal Cardbot Male Main Color: Red Weapon Card: Rex Arm (A large gauntlet equipped on the left arm) Vehicle Mode: Conventional Tractor Truck + Oil Tanker Trailer Personality: Dignified yet benevolent Peruru's Metal Cardbot

Crew member of the Speranza Metal Cardbot Male Main Color: Red Weapon Card: Boost Gambiera (Weaponry in the form of platform shoes) Vehicle Mode: Muscle Car Personality: Hot-tempered and fiery, prone to quick outbursts Peruru's Metal Cardbot

Crew member of the Speranza Metal Cardbot Female Main Color: Navy Blue Weapon Card: Nitro Express (Weaponry in the form of twin machine guns) Vehicle Mode: Fighter Jet Personality: Appears cautious and cold, but is surprisingly cheerful and bright Peruru's Metal Cardbot

Crew member of the Speranza Metal Cardbot Male Main Color: Turquoise Weapon Card: Variable Arm (Auxiliary arm form), Crane Boogie (Axe) Vehicle Mode: Wrecker Crane Personality: Sensible and gentle Peruru's Metal Cardbot

Human Female Metal Breath User Personality: Proactive and energetic

[Former] Medical Officer of Star Guardian Unit 13 Metal Cardbot Male Main Color: Black, White Weapon Card: Dark Slasher (Weaponry in the form of bat wings, capable of transforming into a bat independently and seemingly able to adjust its size), Soul Ravager (Scythe) Vehicle Mode: Ambulance Personality: Polite and gentlemanly, speaks in a formal yet slightly archaic tone Beast Virus Variant: A modified version of the Beast Virus that allows him to control infected Metal Cardbots