The Brigadier and his family have made several appearances in the spin-off media.

The canonicity of the spin-off media in relation to the television series, and each other, is open to interpretation.

The spin-off media have also suggested that they each take place in separate continuities.

Like all spin-off media, the canonicity of these stories is unclear.

However, the canonicity of spin-off media has never been clear.

As with all spin-off media, the canonicity of these events is unclear.

Like all spin-off media, their canonicity in relation to the television series is open to interpretation.

Once again, the canonicity of spin-off media has yet to be officially determined.

As with all spin-off media, the canonicity of this remains unclear.

The Valeyard has appeared in some of the spin-off media.