Board Thread:The Panopticon/@comment-20607870-20161105092747/@comment-1827503-20161124112437

Maxil and John Frobisher, from an in-universe standpoint, are not lookalikes. They just happened to have been portrayed in the real world by actors who went on to play the Doctor.

And speaking of characters named Frobisher, we have a sub-category for shapeshifters, namely Individuals who altered their appearance to look like the Doctor.