Spandrell was Castellan of the Chancellery Guard on Gallifrey for many years. He was succeeded by Castellan Kelner. Spandrell was Castellan during the President's assassination, and led the subsequent investigating into the attack. He was very skeptical of the Fourth Doctor at first, but ended up becoming his ally in the unmasking of ChancellorGoth as the President's murderer. (DW: The Deadly Assassin)
If a medium is not mentioned, then this incarnation did not have companions who were original to that medium; it does not mean that this Doctor failed to appear in that medium.
