Jet Li is 45, Jackie Chan is 54, Chuck Norris is 68, and Kimbo is 34.
Jet Li and Jackie are just trained to do movie stunts, Chuck Norris is only known because some people started some terrible jokes about him, and Kimbo is on the grind daily.
Kimbo's kids names are Kevin, Kevin, Kevlar (holy shit), Kassandra, Kevina, and Kiara.