Magtok was willing to put up with overhearing a lot of nonsense and trash, so long as he successfully got away from Anika and Blanche. It's that last line that has him turning around and marching back up to the loathsome elf, though. Scowling and steaming, he narrows his eyes as he strides back over and glares right at her stupid elfy face.
"I am nothing like Blanche's dad," he insists. If looks could kill, that nasty scowl sent Anika's way would probably be roughly equivalent to an orbital bombardment.
"And I'm also not a demon," he insists after a brief pause, without half as much venom. The demon bit isn't the important part, after all; it's the not-Reinholdt thing we need to stress above all else. Demons are people too, probably, I guess? I don't know, Magtok doesn't mess around with them. I don't think he's even spoken to one since he left AMEN, and that was aaaaaaages ago.