Adelphi
From Tardis Wiki, the free Doctor Who reference
This Time Lord Messenger was sent to Earth to warn the Third Doctor about the arrival of the Master.
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He was dressed as an English businessman, complete with bowler hat and umbrella. His disguise was somewhat compromised by his first being seen to hover in mid-air, due to his co-ordinates having "slipped". He warned the Doctor that his (the Doctor's) old enemy, the Master, had arrived on Earth and might try to kill him. (DW: Terror of the Autons)
