The meta crisis doctor is fully human as far as we know.   When he and Rose were left in the alternate universe, it was made clear that he would age and die along with Rose.  This means that he could not regenerate.   Thus, the fugitive doctor could not be a regeneration of the meta crisis doctor.

What if the new master is contemporary with the Martin Doctor.  That is that he is pre Roger Delgado.  This episode certainly raises the possibility that regenerations of the Doctor existed before Hartnell.  Why not for the Master before Delgado.    This master certainly implied that the Time Lords had hidden something related to the timeless chil…[Read more]