The Wheeled Knight is an armored knight with wheels for legs. He is essentially a Hammer Shaker without the heavy armor who rushes at the heroes at great speed in an attempt to run them over. Only one appears in the entire game, at the middle of the long hallway in the Versailles Palace that leads to the Silhouette Demon.
Each time he's struck he will be sent back a little, although he will immediately regain traction and continue his attack; that means it's most likely he can't be hit more than once per strike. He's a bit resilient, though.
Dealing with him is more a matter of precision, in order to make each hit count. If the player opts to attack repeatedly just hoping that all hits connect, the knight may find an opening through their attacks.