Baron Praxis was an antagonist featured in Jak II. He was a tyrannical and corrupt autocratic ruler of Haven City who overthrew King Damas, and ruled until his death towards the end of Jak II. He served as the political adversary to the rebel Undergroundmovement, and in correlation as the personal enemy to Jak, being directly responsible for his painful acquisition of dark powers spanning two full years as a subject to the Dark Warrior Program.
Styled as "His Eminence, the Grand Protector of Haven City", Praxis ruled Haven City with an iron fist, instituting an authoritarian military police known as the Krimzon Guard. He was the father of Ashelin Praxis, who has served as the governess of Haven City since his death.