Hartnell's portrayal of the character was initially a stubborn and abrasive old man who was distrustful of humans, but he mellowed out into a much more friendly, grandfatherly figure who adored his travels with his companions. The First Doctor's original companions were his granddaughter Susan (Carole Ann Ford) and her schoolteachers Ian Chesterton (William Russell) and Barbara Wright (Jacqueline Hill). In later episodes, he travelled alongside 25th-century orphan Vicki (Maureen O'Brien), space pilot Steven (Peter Purves), Trojan handmaiden Katarina (Adrienne Hill), and sixties flower child Dodo Chaplet (Jackie Lane). His final on-screen companions were the sailor Ben (Michael Craze) and the posh and sophisticated Polly (Anneke Wills). Of the 134 episodes Hartnell appeared in as a regular, 44 are missing.