Gustaff

The Gustaff (グスタフ) is the main Bonne machine piloted in The Misadventures of Tron Bonne. It is first piloted by Teisel in the Nakkai Desert. It is later piloted by Tron Bonne through most of the game. At the end of the game, the favorite Servbot pilots the Gustaff. It is also piloted by Tron in Marvel vs. Capcom 2 and Namco × Capcom, although this version lacks the upper part of its body in order to show Tron piloting it.

In the puzzle missions from The Misadventures of Tron Bonne it is modified into the Gustaff Tank (グスタフタンク), which has tank treads and can't use weapons.

In Mega Man Legends 2, MegaMan must fight Tron with a enhanced Gustaff in the Saul Kada Ruins. This version of the Gustaff can hover and is equipped with a shield in the left arm. It attacks with a flamethrower, bombs and a gatling gun.