Garthe Knigh

Garthe Knight is the biological son of the late Wilton Knight, the eccentric billionaire and founder of the Foundation for Law and Government (FLAG). Imprisoned for several years in Africa, Garthe returns to America with a deep-seated resentment towards his father and a desire to dismantle his legacy. His physical appearance is identical to that of Michael Knight, a fact that causes significant confusion and concern for those who know Michael.

Garthe is a ruthless and cunning criminal, often orchestrating elaborate schemes to acquire wealth or exact revenge. He commands a powerful, heavily armoured truck known as Goliath, which is virtually indestructible and poses a significant threat to K.I.T.T. and Michael. Goliath is equipped with a molecular bonded shell, similar to K.I.T.T.'s, making it impervious to most conventional weapons.

Garthe Knight serves as one of Michael Knight's most personal and dangerous adversaries. His existence not only provides a formidable physical challenge but also a psychological one, forcing Michael to confront a dark reflection of himself and the complicated legacy of Wilton Knight. He appears in several key episodes, consistently proving to be a formidable and memorable foe.