The Warriors of Time are a mysterious group of cats that watch the Doctor throughout his travels. One, Spyra , Appears in The Time Warrior.
This is an example of their uniform.
The are the only non-Gallifreyans that still use Gallifreyan.
This is their Symbol, which is still widely used throughout the cats of Time Forest.Unlike The Time Lords, which are sworn not to interfere, The Time Warriors are sworn to interfere, thus leading to the Doctor being believed to be a Time Warrior.