Fartbox

Here's a crazy idea. Hire a carasmatic charming young man that women like and men admire. He's a bit eccentric, not exactly and action star but great and a fantastic actor. And British.

Have him randomly meet a companion, a attractive young woman he can show the universe to.

Have him state his timeline was made a jigsaw he has to unravel but this is what he knows now:he's a time lord from Galafey. A time lord has 13 incarnations and he used those traveling, being a hero and sometimes even a villain. He was granted more regenerations when he accidentally saved his planet Galafry from oblivion. How many more lives does he have? Many. He doesn't know.

That's it. He's off. No nonsense. Toymaker messed with reality and he fixed it off screen. What's cannon from the nonsense years? Whatever works out. But reset him. Who he is. That's all they need.