Gray Knight is a playable character in Castle Crashers. The Gray Knight is in the beginning levels, and usually is in the levels where the King is. They will help/support you in battle in these levels also, though they aren't really strong at all.
- Splash Attack: Arrows rain down from the sky to in front of the character in sets of three. Each upgrade level adds another set of three arrows.
- Projectile: A bomb is tossed and it bounces around a little until it finally explodes. This projectile cannot be blocked. The Gray Knight also has a benefit with this projectile, he can blow up cracked walls which is very useful.
- Air Projectile [RT, A + Y OR B] (PS3: [RT, triangle or circle]): Shoots a horizontal or downward angled bomb.
- Magic Jump [RT + A] (PS3 [RT + ?]): Leaps up with a dust effect that damages overlapped enemies.
 How to unlock
Xbox: To unlock the gray knight you must beat the first level all the way to the Barbarian boss.
PS3: Same as the Xbox version