Dirt Boss is the name of four fictional characters from the Transformers series. The original Dirt Boss was a Mini-Con introduced in 2002. The Dirt Boss was a Decepticon ally from the planet Velocitron who turns into a racing truck.
In the Transformers: Armada series (called: Transformers: Micron Legend in Japan), Dirt Boss is a Mini-Con. A member of the Race Team (and Road Assault Team when he's evil), he combines with Downshift and Mirage to form the Skyboom Shield.
The Mini-Con Race Team was released in 2002 with a yellow color, while the Road Assault team was released in 2003 with a red color. They appeared in the television series in the yellow color. It was explained in the Dreamwave comics that if a powerful evil Decepticon wields their combined shield form it can turn the members into the evil Road Assault Team.
In Transformers: Armada #9-11 by Dreamwave Productions the Race Team were among the Mini-Cons survived crashing on Earth's moon. Under the leadership of Dualor they built a fortress there and defended it from an attack by Megatron, Starscream, Thrust and Cyclonus. Once Megatron overpowered the base the Mini-Cons escaped to Earth.
The original Armada Mini-Con Dirt Boss was repainted packaged with several Deluxe sized Transformers (Landmine and Red Alert) as a bonus item. Oddly enough he was never packaged with the Deluxe sized character named Dirt Boss, perhaps because that would have been confusing.
Dirt Boss' bio described him as having crashed on Earth from another dimension while the rest of his team landed on Velocitron. Searching for aid, he encountered Landmine. In order to prevent Megatron from capturing the Mini-Con for his purposes, Landmine partnered with Dirt Boss, and the two have now formed a close partnership to help Dirt Boss find his teammates and return home.
The bio printed with Red Alert would expand on this. Revealing that he had been sent to Velocitron alongside Red Alert for his own protection to prevent Megatron from creating the Skyboom Shield once again, it still showed that Dirt Boss desired to protect the weak and helpless - and Red Alert.
- Armada Race Team Dirt Boss (2002)
- Packaged with Mirage and Downshift as the Race Team.
- The original version of Armada Dirt Boss (and the rest of the Race Team) was repackaged in the Universe line individually with a collectible Tiny Tin.
- Armada Road Assault Dirt Boss (2003)
- The Race Team was later redecoed in red and white as the Road Assault Team.
- The Road Assault Mini-Con Team was repackaged with the Space Team as a discount six pack of Mini-Cons under the Energon label. These toys were identical to the Armada version.
- Cybertron Deluxe Landmine with Dirt Boss (2005)
- Dirt Boss was repainted in black and red and packaged with a Tiny Tin in a special double-pack with Landmine. A Walmart store exclusive.
- Cybertron Deluxe Red Alert with Dirt Boss (2005)
- Dirt Boss was repainted in black and red and packaged with a Tiny Tin in a special double-pack with Red Alert. A Walmart store exclusive.
In the Transformers: Cybertron series (called: Transformers: Galaxy Force in Japan) Dirt Boss (called Inch Up in Galaxy Force) a tough outlaw on Velocitron. Dirt Boss deliberately gives the impression that his sheer bulk means he is slow - a misapprehension he soon clears up when he reveals his true speed. He enjoys literally crushing his opponenets into the road. 
The Cyber Code Key Info on the Hasbro website reinforced much of this, noting that, in common with most other residents of the Speed Planet, Dirt Boss simply loves to drive. Unfortunately for anyone who crosses his path, he is also the most vicious and nasty driver on the roads, this crosses over into the series where Dirt Boss has been seen attempting to cripple or even kill opponents to win, he frequently laughs insanely and often shouts furiously at those around him, including his allies, due to his violent tendencies and other extreme personality ticks, Dirt Boss' sanity is questionable. His Takara tech spec revealed that, as his name suggests, he is one of the best when it comes to traversing bad roads of all kinds. He can also alter his vehicle mode, dropping his ground clearance and increasing his speed. Unfortunately he has been defeated in a race by Override on numerous occasions.
Dirt Boss quickly found himself racing Hot Shot, who had become enamoured with the local lifestyle. However, Hot Shot was nearly buried when Ransack and Crumplezone took advantage of the race to eliminate a rival and started a rockslide. Dirt Boss then entered the qualification rounds for the Planet Cup competition, winning the second by defeating Hot Shot and Override. However, in the final race he was beaten by Hot Shot, losing out on getting the Cup.
After this, Dirt Boss stayed on Velocitron while Ransack and Crumplezone left. He witnessed the attempt of Primus to seal the black hole caused by Unicron's demise. Later, he was one of the army of Transformers that came to battle against Galvatron and his powered up Decepticons as he attempted to use the Cyber Planet Keys to control the black hole. Later, he was one of the Transformers that helped move the rocket controlling the Jungle Planet back into position.
After the eventual defeat of Galvatron Dirt Boss, along with Hot Shot, Ransack, Dark Crumplezone, Brakedown and Clocker, raced in the "Speedia 500" to see who would become the new leader of Velocitron after Override left to join the Space Bridge project. Dirt Boss would lose to Hot Shot.
- Cybertron Deluxe Dirt Boss (2005)
- A Deluxe sized toy. 
- Dirt Boss has 5mm holes in his fists.
- Cybertron Deluxe Dirt Boss with Downshift (2005)
- A special value pack sold at Walmart stores included a recolor of the Armada Downshift Mini-Con toy with a Tiny Tin.
- Cybertron Deluxe Landmine, Snarl and Dirt Boss (2006)
- A special value three-pack sold in Toys-R-Us stores in 2006 included Cybertron Landmine, Snarl and Dirt Boss.
Transformers: Revenge of the Fallen
Dirt Boss is the name of a Decepticon forklift in the Revenge of The Fallen toy line. He seems to be based on the appearance of the first movie's video game Scrapper drone, albeit with a Constructicon-style green color scheme. (See: Scrapper)
- Revenge of The Fallen Scout Dirt Boss (2009)
- A Scout Class toy.
- This toy was recolored into Revenge of the Fallen Deadlift.
- This toy was repuposed into the Sweep upgrade for the GoBots Crain Brain and Screw Head.
Dirt Boss is a Decepticon who transforms into a forklift, being a bitter figure of short stature with a fierce temper and no tolerance for slackers. He has the ability to control other robots and machines as if they were puppets by firing a Cerebro Shells into them, similar to the Generation 1 Insecticon Bombshell. Like the other Constructicons in the series, Dirt Boss speaks with a Brooklyn accent and his personality mimics that of the New York construction worker stereotype. 
In "Three's a Crowd", Dirt Boss is created in an accident when an AllSpark fragment animates a Headmaster unit and a forklift that crashed through the floors of Sumdac Tower, combining them while forming a cocoon out of the surrounding debris. When found by Bulkhead and the Constructicons, Dirt Boss ruthlessly takes command of the Constructions and becomes their leader. Using them to do the dirty work, Dirt Boss has Scrapper and Mixmaster steal most of the oil in the city before he comes up with the notion of blowing up the Fossil Fuel refinery, and thus gaining control in the oil business. They then take Bulkhead hostage when he tries to stop them, with Dirt Boss later using him as a scapegoat to ignite the main tank. Though the Autobots arrive and free Bulkhead from his control, Dirt Boss takes manual control of Scrapper as he forces him and Mixmaster up to the top of the main tank as the fire makes its way there. Then, just when the tank was about to blow, Bulkhead throws Professor Sumdac's newly built plasma dynamic thruster up to the top of the tank, which transwarps it and the Constructicons over to lake Erie near Dinobot Island.
- Dirt Boss (Decepticon Deluxe Vehicles, Transformers: Cybertron)
- Transformers Cybertron: Dirt Boss
- Seibertron.com - Dirt Boss
- Transformers Animated Bots vs Cons, Hasbro Transformers Collectors Club magazine, issue #28, August 2009/September 2009, page 3