He is the great and powerful King's Hand, Ned Stark. [As Isaac clambers out of his arms, he shifts Scott on his waist and reaches for the chain that goes with the costume, pinning it to Derek's lapel, biting his lip to try and hide the stupidly huge smile on his face.

This was a great idea.]

And it just makes him asthmatic, is all. The concept of Fun is terrifying to your wild local Derek Hale, but fear not, Stiles is here to make him actually--gasp, enjoy himself.

[Grinning, he puts Scott down.] Don't tell me you guys don't have costumes.