Did you know that Man-Bull is a legit Marvel comics villain? He first appeared in a Daredevil comic way back in 1971. (She-Hulk made her Marvel comics debut in 1980.)

She-Hulk doesn't delve into Man-Bull's backstory, but essentially, Man-Bull's real name is William "Bill" Taurens. He was a henchman for a villain named Mister Kline, who wanted to test out an experimental serum made from bulls on people. So Kline ordered William to gather people as test subjects.

However, the evil scheme was thwarted by Daredevil. In an ironic twist of fate, William ended up being the test subject — and thus, Man-Bull was born.