Harvey Parson

H. Parson was the headmaster at Coal Hill School in 1963 and by extension, Ian and Barbara's boss. (DW: An Unearthly Child) At an unknown point the Imperial Daleks took control of him and used him as an undercover agent, implanting a thin device behind his ear. He was presumably killed when the Imperial Daleks exterminated him, likely via his implant, so Mike Smith could not get information out of him. (DW: Remembrance of the Daleks)