The 3rd Doctor

After being forced to regenerate by the War Lords, he is sent to earth with a new face, together you fight: Autons, Silurians, General Charles Collingten, Professor Stahlman the Master (who was the doctors friend growing up), Axos and the master, The Master again, Azal, Daleks, the High Priest Hepesh, Sea Devils and the master, Marshal and the Overlords of Earth Kronos. the Showmen, The Master, The Daleks Giant Maggots Sontarains Dinosaurs Daleks Ice Warriors And finaly Giant spiders