Perfect Guards (also known as "Perfect Defense" in the anime) are units that specialise in guarding. They can guard regardless of how massive the amount of power is if the ability is paid by discarding one unit from its own clan to the drop zone. Most of the clans had only one Perfect Guard while the rest have none. This was until Booster Set 9: Clash of the Knights & Dragons was released, where Gold Paladin and Narukami were given a second Perfect Guard and instead of the usual color the shield value color was changed into gold. Standard Perfect Guards have 6000 Power and 0 Shield.
You can only have up to four of this card in a deck due to the "Sentinel" keyword. This however conflicts with Quintet Walls which means that you may only have a number of Quintet Walls and Perfect Guards that equates to 4 (for example, you may only have 2 Perfect Guards and 2 Quintet Walls in your deck, or 3 Perfect Guards and 1 Quintet Wall).
List of Perfect Guards cards
- Etranger is the only clan so far without a Perfect Guard.