"Let go of him. Casper, Bob, get behind me. Anyway, asshole, scarier people than you have tried to make me pay for worse things." He's not even a demon. He's not scary. Just a... long-lived evil Nazi mage. Who's strong enough to hurt a demigod. It's fine.

He blocks the knife with a blast of spiritual energy from one hand, sending it flying aside to smash a mirror and clatter to the floor.

Kao Ci flips around in the air behind Casper Sr. and the point drives for the elbow of the hand holding Casper's collar, the edge sizzling with spiritual energy.