Subverted: Despite his physical prowess, Walter isn't all that good in a fight...
...Or so he wants his opponent to believe. Once the enemy lets their guard down, he shows his true power.
...at frontal assaults, at least. Switching strategies to using choke-holds and throws works a lot better for him.
Parodied: An enemy boasts that he cannot be harmed by magic, so Walter punches his face REALLY HARD!!!.
Zig Zagged: Walter loses his magic powers and decides to take up martial arts. He becomes a master of them. He later regains his powers and relies on them so much that he forgets his martial arts training.
Averted: No magic users are martial artists and no martial artists are magic users.
Enforced: To be able to enter the inner circle of the Wizards Guild, Walter must defeat a demon using only martial arts and no magic.