Frank Jr. Cosgrove is a supporting character in the Netflix series, Ozark. He is the son of the head of the Kansas City Mob. About[edit | edit source] Frank hangs out most of the day at the casino, pissing off Ruth and trying to play in high stakes card games. Retrieved from "https://ozark-netflix.fandom.com/wiki/Frank_Cosgrove_Jr.?oldid=1085" Categories: Characters Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.