Harrison Steele/Old Timeline

Senior Detective Captain Harrison "Harry" Steele was a Galactic Union military and law enforcement official who was a member of DI-99. 
Steele was a member of the Galactic Union Military during the war, where he served on Buran with his younger brother, Arthur Steele. He seemingly perished during the Siege of Buran, however in actuality he survived and was recruited by the Department of Investigations. 
After having observed an interaction between a Zultan General and a human wearing a Naval Flag Officer uniform, Steele became witness to the clandestine activities of the criminal organisation, CARNAGE. Having discovered crucial evidence of CARNAGE's activities, Steele was hired by the Department of Investigations and assigned to DI-99, where he was charged with investigating the organisation and bringing it down. 
Having spent years underground and undercover, Steele compiled a dossier of evidence on CARNAGE and their elusive members, this dossier referred to as "The Red Report". However, as Steele was making his breakthrough, he was murdered by a member referred to as "Sheriff" who was their hitman and enforcer.
Steele's death prompted DI-99 to bury their investigation into CARNAGE, and request that SPECOPS blacklist all of Steele's findings, including The Red Report, until they could ensure they would be safe enough to take direct action against CARNAGE. 
Steele's younger brother, Arthur, who believed Harry to have perished on Buran during the war, has gained a reputation for himself. Arthur too was assigned to a unique organisation to stop a threat to the galaxy, TASKFORCE.