Bonebreaka
Bonebreakas are a type of Heavy Ork tank. Used by all Ork Clans, it is armed with a single heavy Battlecannon in a turret and a huge spiked Deathrolla on its front hull. The spiked Deathrolla is what gives the Bonebreaka its name. The Bonebreaka is similar to the Bonecruncha in that they both share the same chassis which consists of a Rhino. They only differ in terms of main armament. Whereas the Bonrcruncha consists of two twin-linked double barrelled weapons meant for rapid fire and destroying infantry and lighter vehicles, the Bonebreaka is armed with only one massive Battlecannon meant for annihilating enemy armor and tanks.
They along with the Bonecruncha can be considered true Ork Heavy tanks.
Nowadays it has been mothballed by Games Workshop, possibly because it looks too similar to the Battlefortress and its countless flavors or the Battlewagon without the Deathrolla.