Wladimir Klitschko: Wladimir Klitschko. Actor: Pain & Gain. Dr. Wladimir Klitschko is founder, hotelier, investor, endowment donor and well known internationally for holding the record as the longest reigning heavyweight boxing world champion. He was born in Kazakhstan and is Ukrainian citizen.
After ending his sports career in 2017, it became his mission to share the knowledge he gained in 30 years of competitive sport. Together with his team of Klitschko Ventures, the...
