After arriving within a pre-programmed S.H.I.E.L.D. shuttle on planet Sakaar in a weakened state (due to the effects of traversing the 'Great Portal'), Hulk was subsequently implanted with an obedience disk. He was thereafter forced to fight in the Great Arena as a gladiator, where the Red King intervened and scarred the Hulk's face, earning his gladiatorial moniker 'Green Scar,' and the Hulk did the same to the monarch, gaining an enemy in the person of the Emperor himself. After the initial events in the Arena, the Hulk was put through the gladiatorial tests of the trainer and himself former gladiator Primus Vand, where he met Korg, Miek the Unhived, the Brood, Hiroim the Shamed, Elloe Kaifi and her bodyguard Lavin Skee. This ragtag group of outcasts and undesirables became Warbound early on in their time as enslaved entertainment, pledging allegiance only to each other - which Miek called 'friends fighting for friends'.
After the Emperor of Sakaar, the Red King, tries to kill them numerous times, the Warbound escaped after the enslaved 'Silver Savage' was pit against them in the Great Arena, where the Hulk shattered his one-time ally's obedience disk. Once freed, the Silver Surfer used his returning Power Cosmic to destroy the obedience disks of all present at the arena, allowing the Warbound and many slaves to escape into the Twisted Wood of Sakaar. After a protracted rebellion against the genocidal Red King, the Warbound, the Imperial rebels and the Natives of Sakaar toppled the regime in Crown City with the death of the Red King, placing an initially unwilling Hulk on the throne as the Green King.
The shuttle which originally brought the Hulk to Sakaar malfunctions, causing its warpcore to detonate: the Hulk's wife Caiera, their unborn child, and countless magnitudes of Sakaar's inhabitants died almost immediately. Having pledged to stand and fight side-by-side until the end, the Warbound went with Hulk into the Stone Ship, once belonging to the Shadow People, heading straight for Earth to take his revenge on the Illuminati who conspired to blast him into space in the first place.
Members:
Korg
No-Name the Broodspawn
Elloe Kaifi
Kate Waynesboro
Former Members:
The Hulk
Caiera the Oldstrong
Arch-E-5912
Lavin Skee
Miek
Hiroim the Shamed
Members of Hulk's Army:
Mung
The Hivelings
Death's Head Unit