Arnora

Arnora was mother superior of the Unon.

After the Last Great Time War, Arnora and the Unon became time and space's "judge, jury and executioner". She led a crusade against the Lect for that cause.

She trapped the Ninth Doctor in a sub-dimensional void after he tried to summon the Unon for answers. Whilst there, she probed his mind to discover how he survived the Last Great Time War, bringing up his memories of the Eighth and War Doctors. She then forced him to watch as the time bubble over Fluren's World was deactivated, unleashing a supernova that seemingly killed his companions. (COMIC: Weapons of Past Destruction)