Bill Walsh was in the elite military school, Camp Washington, partnered with Slade Wilson
. He washes out of Camp Washington and blames it on Slade. Also Bill thought that Slade had stolen his chance with Addie Kane
, who was a an instructor at Camp Washington, who went on to be Slade's wife. Bill spends his life getting back at Slade. First by kidnapping his youngest son, Joseph Wilson
, as the Jackal, and slits young Joey's throat, making him mute. He later recruits Slade's older son, Grant Wilson
, into the H.I.V.E. organization which injects him with a serum that gives him super powers, but eventually kills him (a side-effect that Bill knew would happen).
Later he becomes the Ravager
and masquerades as Grant Wilson
before attacking Slade, who is now the mercenary Deathstroke the Terminator. Walsh is ordered to blow up Washington, D.C.
by his new employer General Kaddam
, but Walsh prolongs the mission in order to engage Deathstroke, which had been his plan when for the entire time when hired by Kaddam, but it turns into a fatal mistake. Initially possessing the upper hand, Bill mauls Deathstroke with a flail before proceeding to open fire on Slade with an automatic rifle, though Deathstroke eventually kills Walsh with his Broadsword during the fight. During the fight Bill reveals his identity to Slade, and reveals the vendetta he has against Slade, which surprises Slade who hadn't thought Bill had anything against him, had thought of them as partners. After the fight Slade dismantles the bomb intended to blow up D.C. whilst reflecting on his former comrade's unexpected hatred of the Slade.
Bill Walsh comes back to haunt Slade in Blackest Night
when he, along with Wade DeFarge
attack Slade's home.