Final answer:
The musician known for biting the head off a bat during a concert is Ozzy Osbourne. The incident took place in 1982 and has since become a legendary moment in rock history.
Step-by-step explanation:
The musician who infamously bit the head off of a bat mid-concert is Ozzy Osbourne. This occurred during a performance in 1982 when a fan threw a bat onto the stage, and Ozzy, thinking it was a rubber toy, bit its head off. This event became one of the most notorious stories in rock history and contributed to Ozzy's wild reputation.
Ozzy Osbourne is often associated with heavy metal music and is known for his outlandish stage antics. His act of biting the head off a bat, whether intentional or by mistake, has become a defining moment in his career and a legendary tale among music fans.