Artemis Fowl and Fletcher Moon

Yay! Nath asked me for an Artemis Fowl drawing and got me addicted all again to Eoin Colfer.
I think you all must know who Artemis is, the criminal genius rich boy and all. The other one, in the right, is a character from another of Colfer's books, Fletcher Moon, from Half-Moon Investigations. Moon (or Half Moon, because he's small, damn) is a genius detective boy soooo... Crossover? Please! I wanted to write something about a fight of wits between them, but... Oh, man.