You may be looking for The Thoros Alphan with the same name.

Verne was a member of the High Council of the Time Lords. He was said to have been the most beautiful person ever to be seen on Gallifrey but was totally unsuited to politics. During a very delicate motion under debate by the Council, Verne accidentally voted for the side opposing those who had sponsored his rise to power.

This caused a fight to break out, and Verne was so badly injured that he was forced to regenerate into an incarnation that had a plain face and a laughably high voice. Upset at this, he immediately forced himself to regenerate again, this time into a deformed old man. A third regeneration resulted in an amorphous blob and a fourth in a monstrosity which was ordered to be destroyed by the Lord President. (PROSE: The Twin Dilemma)

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