The Blue Knight is a playable character in the video game Castle Crashers
. His Blue helmet is his defining feature. He also initially wields a black staff and a shield, but you can change his weapon by visiting the blacksmith.
As with the rest of the characters in Castle Crashers, the Blue Knight has a Magic Ability; his being the ability to perform Ice attacks upon enemies. The Ice attack is unique to the Blue Knight - it's purpose is more passive-aggressive - because it only freezes them. It does progressively more damage as you rank up. To perform the Ice attack the user must press the Y button whilst holding in RT (Right Trigger). This will cause the Blue Knight to make an Icicle fall from the sky and land in his immediate area; if it makes contact with an enemy it causes an initial impact damage and also freezes them. The range and damage of this attack is entirely dependent on how many points the user has invested into the Blue Knight's Magic stat. If this stat is raised enough, then you are able to perform another magic attack by pressing RT B. This shoots a ball of Ice at the opponent. This attack is more offence-based, and has more range then the RT Y attack. When the magic stat is raised still further, the Blue Knight is able to perform a third Ice attack. By pressing RT A, a fist made of Ice will emerge from beneath the character, propelling them into the air.