Michael Ashworth was a UNIT soldier. He was the son of General Terrance Ashworth and Doctor Joyce Brunner.
When he joined UNIT, a number of his fellow soldiers thought the Third Doctor was a grandstander who often got UNIT troops killed. Michael defended the Doctor until the Time Lord's actions unintentionally caused Michael's friend Andy's death. His anger towards the Doctor grew after that until he met the Seventh Doctor in 1982, when Michael punched him. (PROSE: Relative Dementias)