[Oh, he saw what you did there. He tries to glare at Jack, but the corners of his mouth quirk up instead.]

Jackass.

[He looks into the screen arrogantly.]

You'll be sorry for underestimating me!

[He grins, more genuinely this time, and the next bit is said as a promise to himself, Jack, and Lisbeth.]

You won't wait long before you are in the face of greatness!