The Three Dog Knights are minor characters who first appear in "Duke and the Great Pie War." They are three identical carrot knights who attend Knight school along with Duke Duke and Sleepless Knight. They are all offended by Rhubarbarians, and often make fun of them.
Three Dog Knights are identical carrots. They all wear helmets and have brown mustaches and wear armor with black and white squares. They also have black dogs on their armor. The only differences between them is that their armor is different colors and they are different sizes.
- Themselves in "Duke and the Great Pie War"
- Themselves in "Duchess and the Great Cheese War"
- Themselves in "Princess Petunia and the Good Knight"
- Themselves in "The Surprising Knight"