I am Mortimus, a renegade Time Lord from the planet Gallifrey in the constellation of Kasterborous. I disagreed with my people's policy of non-intervention and stole a Type 50 TARDIS, believing we should use our mastery over space-time travel not merely to observe, but to actively work to improve things and create the best possible timeline for all. I don't believe in the sanctity of history and I have no qualms about altering it, though I don't always consider the consequences of my actions.