Indomitas 2017 Ford F-550 Super Duty six-wheeler is available for $135,000.

For those who thought the Hennessey Velo Raptor 6x6 was the king of pickup trucks, "Indomitus" has a word for you.

First spotted by The Drive, the so-called Indomitus pickup is for sale through Unique Specialty & Classics in Mankato, Minnesota. It started life as a 2017 Ford F-550 Super Duty, but then went way off the deep end to become the behemoth you see here.

Dillion Thomas of Unique Specialty & Classics told Motor Authority that Indomitus has been sold on consignment and is currently sitting off the lot while awaiting a new owner.

Indomitus was featured in episode 4 season 4 of "Diesel Brothers" and was built by the show's team for the Minnesota Soybean Research Council.

The council commissioned Indomitas to show that soybeans are a viable source of biodiesel and that biodiesel vehicles can run on regular diesel fuel. According to Thomas, the order was to "build an absolute monster. This meant modifying the Ford F-550 to add a rear axle for six-wheel drive.

The name Indomitus was chosen from the Latin for untamed and wild.

Under the hood is a 6.7-liter turbo diesel V-8 engine with a six-speed automatic transmission sending power to all six wheels. The truck's bed is equipped with a ball hitch for the fifth wheel and is ready to work.

The rear tandem axle features a custom four-link suspension with adjustable airbags and Bilstein shocks. Some of the suspension was sourced from Rough Stuff.

PPG paint in Giverny Green gives the Indomitas a military-like appearance, with the word "BIODIESEL" splashed on the side so everyone knows what powers the engine. The tribal tattoo graphics add to the attitude, and according to Unique Specialty & Classics, the livery can be removed at the buyer's request, but given how well it suits this dashing truck, why bother? However, considering how well it matches the truck's swagger, there is no need to remove it.

The ViCal visor, made by Fab Fours, is emblazoned with the Indomitus name and gives the truck a stronger presence.

The custom rear side fenders are two Super Duty rear fenders bonded together with fiberglass for a factory look on the two rear arches. An 11-foot custom bed was built to fit between the elongated rear ends, and a 7-inch Readylift suspension kit helps the 40-inch Continental MPT 81 tires and DBL wheels fit in the wheel wells.

Frog front and rear bumpers were installed along with a headache rack on the bed.

Inside, the team kept the F-550 stock, or pretty bare bones. The cloth interior is a bit bleak, with a small infotainment screen on the center stack, tons of black plastic, and a vinyl floor. The Indomitas rolls up next to the combines, which makes it perfect for farm life.

With 12,823 miles on the odometer, Indomitas is ready to become someone's new $135,000 toy.

It is worth noting that it is one-third the price of a VelociRaptor 6x6 or Goliath 6x6.