I don’t care about casting except: 1) David Tennant NEEDS to be on this show. 2) If Flynn Ryder is ever cast it has to be Zac Levi. I will accept no alternative.
YES!!! David Tennant and he can use his sonic screwdriver to open up portals and by saying these 4 magical words: “Wibbly Wobbly, Timey Wimey!”