Blaze is kindhearted, loyal, and brave. He's usually in a good mood and is willing to help others whenever they need him. Blaze is a convertible monster truck based on multiple trophy trucks and pre-runners, specifically the first-generation 2010-2014 Ford F-150 SVT Raptor or even 2013-2014 STX and/or FX4. He is painted dull orange-red with gold lining on his hood filter. He has blue eyes as well. He has four round lights on his roof edge, red springs on his shock absorbers, and his signature flame emblem on both sides of his doors, and even on his steering wheel's horn. His tires have flame designs and have red/gold rims. He also has a spoiler tucked into his middle back that retracts when his Blazing Speed is in use.

AJ is an 8 year old human child with light brown skin, dark brown hair and brown eyes. AJ is intelligent and is an expert when it comes to different types of machinery and science, and how each one works. He is generally calm and collected. He is also Blaze's driver.

Gabby is a 9 year old human child with light skin, purple hair ties up into a ponytail, and blue eyes. She is gusty, hard-working, really intelligent, and good with all varieties of tools. She's the mechanic of Axle City and the driver of Watts

Like Blaze, Watts is shown to have a fun and outgoing personality and loves adventure. She's always caring for her friends, and even enjoys Gabby's company in return. She's always confident in herself and is willing to help anyone in need. Watts has a rather unique appearance unlike the other Monster Machines. Like Blaze, she has no roof too. She is painted metallic hot pink with a silver bumper and lower frame. What sets her apart from the other trucks is her electric tires, which are yellow and transparent