10. WilyKat & WilyKit (Thundercats)
WilyKat and WilyKit are the two youngest members of the Thundercats. Both being incredibly agile and mischievous, they would offer the Doctor a new kind of companion - a kind of which he has never had the pleasure of working alongside before. With WilyKat's cautiousness and the adventurous nature of his sister WilyKit, between them, they'd be a useful addition to the Doctor's adventures. WilyKat and Wilykit's primary weapons are grenade capsules which are located on their belts, containing a variety of chemical, smoke, and incendiary compounds, making them useful in any physical skirmishes that occurred while the Doctor was saving the world.