The Diabolus is a new chopper style motorcycle in The Lost and Damned. It is featured in the game's trailer and screen shots and beta version of its file exists in the PC version of Grand Theft Auto IV. This motorbike is commonly used by The Lost Brotherhood, and is based on a West Coast Choppers El Diablo. The player can get the Diabolus by calling Clay. Otherwise it is not commonly found on the streets. This vehicle looks nearly identical to the Hellfury (but with different exhaust pipes, exhaust note, a different fuel tank and an added buddy bar above the rear fender).
The Diabolus, like its twin Hellfury, is an average chopper. Its top speed is what makes up for its lacking acceleration. And at times, oversteer is a problem; because of its length, high speeds along with cornering can end with an unpleasant end in a wall. But with enough skill, E-brake turns can make cornering a breeze. Its pretty durable for those gunfights, but thinking about a slick getaway is impossible with just a rim. Because of its size, this bike isn't the pick of the litter when it comes to wheelies and endos; after all, its a chopper. But besides the cornering, its handling and top speed is great and ensures a good ride.
- Jason Michaels rides a unique magenta Diabolus.
- Brian Jeremy rides a unique crimson colored Diabolus.
- Terry Thorpe rides a blue Diabolus.
- Clay Simons rides a purple Diabolus.
- The default radio station in the Diabolus is Liberty Rock Radio 97.8.
- Obvious to its real-life counterpart, the name Diabolus seems to come from combining the word "diablo", which means devil in Spanish, and "fabulous".
- Can be found parked on the west side of the Lost MC Clubhouse, in the alleyway.
- Can be rarely seen driven by the The Lost Brotherhood.
Always parked at the 69th Street Diner in Hove Beach.
- The player can call Clay for one after completion of the mission, Angels in America.