Sonny Liston was a formidable American boxer who rose from a troubled upbringing to become one of the most feared heavyweight champions of his era. With his devastating punching power and intimidating presence in the ring, Liston dominated the boxing world during the 1960s, earning him the nickname "The Big Bear." Despite his success, Liston's life was marked by controversy and adversity, but his impact on the sport of boxing remains undeniable.