OK, this series is still going. Here goes:
He is called "The Protector" Why not?
His entire universe was destroyed by a universe destrying bomb called a Nova Discharge Detonator or something fancy like that. 
As his TARDIS dematerialised, the universe was just about to dissapear. Just as his universe collapsed, his TARDIS tried to lock on the the time vortex, and obviously couldn't because it was gone, and so it locked on to "ours". He crashed into The Doctors TARDIS, and then The Doctor helped him recover.
Now he travels around, like The Doctor. I would use The Doctor, but I want him to regenerate, and do things that The Doctor never would. (What was it that Doc said he never would in The Doctors Daughter?)
OK, so, I'm going to make this series for sure, but I thought of this: In the real Doctor Who, there are multiple writers. And if there are some people who seriously want to write some stories for it, let me know, and when I'm ready I'll give you all the details you'll need.

So here's the thing, I've A: Lost interest, and B: have no time to animate anymore. Expect little from me in the future. WIP projects have been pretty much abandoned and my LEGO collection is boxed up. No, you can't have it.

But do not fear, I may return to it one day.