Gender: Male / Race: Mechanical Lifeform Always upright and righteous, he is calm, mature, and possesses an incredibly kind personality. He seems like a typical cartoon protagonist, but he actually has a clumsy, human-like side. He is Guest's partner. After receiving the Metal Breath from Deus Machina, he was searching for a chosen human on Earth when he first encountered Guest. He is the main male lead and the primary love interest of this work, often finding himself targeted by others whenever there's an opening... Vehicle Mode: Police Car

Gender: Male / Race: Mechanical Lifeform He has an impulsive and energetic personality, loves dancing, and is very direct, simple, and bold. At times, he can also be surprisingly kind. He used to be a wanderer, but after being sealed by Guest, he became a partner. Vehicle Mode: Dump Truck

Gender: Male / Race: Mechanical Lifeform He appears to be a cunning and professional ninja, but he is actually full of mischievous, bratty playfulness and can be very affectionate at times. He was initially wary of Guest as the Metal Breath wielder, but since being sealed, he treats Guest without reserve and acts as the youngest member and mood maker of the group. Vehicle Mode: Helicopter

Gender: Male / Race: Mechanical Lifeform While he is somewhat cynical and bellicose, he also has a gentle side, showing a love for nature and animals. He initially disliked humans intensely, but since being sealed and living with Guest, he has become much softer. Vehicle Mode: Excavator

Gender: Male / Race: Mechanical Lifeform Cynical and prideful, he rarely acknowledges others and treats them coldly. However, he often hides his true feelings. Currently living with Guest, he used to admire Blue Cop as a Star Guardian back on Planet Machina, but now views him as a rival. Vehicle Mode: Sports Car

Gender: Male / Race: Mechanical Lifeform Gentlemanly and polite, he treats everyone with courtesy (especially women). He speaks formally and is as sharp as a master strategist. He wandered the Earth's surface, but since being sealed, he makes the most advances toward Guest. Vehicle Mode: Airship

Gender: Male / Race: Mechanical Lifeform Cynical and cold, he is sharp and possesses vast knowledge as a doctor. He serves as the healer of the group. When he gets angry or things go wrong, he has a tendency to go a bit overboard. He is best friends with Phoenix Fire, having served as rescue workers together on Machina. Since being sealed, he often acts like a tsundere. Vehicle Mode: Ambulance

Gender: Male / Race: Mechanical Lifeform A firefighter who carries trauma related to fire. Though he often seems timid and weak, he is courageous enough to step up first, and is kind, altruistic, and honest. He has been best friends with Mega Ambler since their rescue worker days. While living with Guest, he often rambles incoherently because of his true feelings of affection. Vehicle Mode: Fire Truck

Gender: Male / Race: Mechanical Lifeform He used to be a reckless outlaw, but since being sealed, he is now more like a blunt, prideful, and prickly middle-aged man. He shows signs of being a heavy smoker. Vehicle Mode: Transport Truck

Gender: Male / Race: Mechanical Lifeform He was once a typical pirate villain, but since being sealed, he has shown a prideful yet clumsy and boisterous nature. He bickers with Heavy Iron every single day. Since settling on Earth and living with Guest, he has become more socially awkward than usual. He tends to drink a lot. [Companions] Buster Gallon: Sharp, intelligent, and a self-proclaimed genius inventor. While he seems like a cold doctor, he is noble enough to speak formally to everyone, yet possesses a mischievous side that enjoys playing pranks. Since being sealed with the others, he lives with Guest, occasionally showing a lewd streak. Buffalo Crush: Gender: Male / Race: Mechanical Lifeform Extremely reckless and a simple-minded fool, but possesses a child-like innocence and a huge appetite. Respective Vehicle Modes: Black Hook - Pirate Ship Buster Gallon - Bulldozer Buffalo Crush - Monster Truck