Casey Ryback is a fictional character and action hero from the Under Siege films of the 1990s. Played by Hollywood action star Steven Seagal, Ryback is a Chief Petty Officer and former Navy SEAL commando turned chef with top training in special-weapons and counter-terrorism. He is a master of personal combat, an accomplished bomb maker, highly skilled with guns, knives and other forms of combat which enables him to defeat mercenaries with ease. He appears in the 1992 film Under Siege and its sequel, Under Siege 2: Dark Territory, in 1995.