The Man-Brute first appeared in Captain America #121 (January 1970), and was created by Stan Lee and Gene Colan.
The man originally known as the Man-Brute was an ex-convict whose strength was boosted by a factor of twelve by Professor Silas X. Cragg.
Cragg had been an enemy of Captain America ever since World War II and had developed a Super Soldier Serum variant which he used to empower the Man-Brute.
[2] He changed his name to Blockbuster, and sought to gain wealth for his son Robert, to give him a better life and keep him from becoming a criminal like himself.
Blockbuster then robbed a diamond store, and the owner made an offer of a thousand dollar reward to which Omega responded.