Attack Titan

The Titan that 'has always fought for freedom': it sees the memories of future holders, as well as past ones. Known holders: Eren Kruger, Grisha Yeager, Eren Yeager.

It has no spectacular powers but a will of its own: no holder has ever truly served Marley. The power to see the future — and to send memories into the past — closes the story's loop: it is Eren, as an adult, who pushes his father to devour the Reiss family.