The dramas feature both former actors who portrayed the Doctor and his companions, and new continuing characters as well as elements from other spin-off media. The canonicity of the audio dramas, as with other "Doctor Who" spin-off media, is unclear. To date, productions have featured the Fourth (Tom Baker), Fifth (Peter Davison), Sixth (Colin Baker), Seventh (Sylvester McCoy), Eighth (Paul McGann), War (Sir John Hurt) and Tenth (David Tennant) Doctors portrayed by their original actors. The Return of the Ninth Doctor as portrayed by Christopher Eccleston was announced in 2020.