7. Ace Bashes in a Dalek's Dome
From: "Remembrance of the Daleks"
Premiere: October 5, 1988
Amid the looming threats of rival Dalek factions, an English neo-fascist cadre and a powerful artifact stashed away by the Doctor long before, companion Ace (Sophie Aldred) – real name Dorothy McShane, a mouthy, bomb-chucking partner to Sylvester McCoy's Seventh Doctor – comes into her own, dispatching a Dalek with a baseball bat soaked in alien energy. Fondness for explosives aside, Ace is a scrappy, independent young Earth woman – and a clear antecedent for Rose Tyler in the subsequently revived series.