Board Thread:The Panopticon/@comment-4028641-20151008023030/@comment-27343779-20191104185659

As far as I know here is all we have regarding the Delgado/Beevers/Pratt debate:

The Delgado Master regenerated in a DWM 12th doctor comic. Furthermore, in the book "Harvest of Time" the third doctor mentions that the Delgado Master could regenerate.

A Beevers incarnation was damaged beyond repair in "The Two Masters" audio and became crispy. No regeneration.

A crispy Pratt, after his twelfth regeneration appeared in "The Deadly Assassin"


 * ENGIN: After the twelfth regeneration, there is no plan that will postpone death.
 * DOCTOR: He had a plan.

But he was partially healed by the Eye of Harmony. "There was a good deal of power coming out of that monolith, and the Sash would have helped him to convert it."

The 4th Doctor noted that the crispy master became "less putrescent" during their next encounter in "Trail of the Worm".

In the Keeper of Traken, Beevers states: "I am now nearing the end of my twelfth regeneration."

I believe it would be just speculation that Pratt and Beevers are different regeneration. At the most I guess he could be a stolen body that decayed and reverted back to Beevers but i don't know of any valid source on the matter.

On the other hand we have a single valid book "legacy of the Daleks" which implies that Delgado was the crispy master.