Character Analysis
Mulch is a pretty big deal in the novel because he's the fairies' way into Fowl Manor and the reason they know about Artemis's copy of the Book—but Mulch is also just a tool in fairy hands for the time being. He shows up when they need him and then gets rewarded with... well... slightly less jail time. Woo hoo.
Mulch, like many of the other characters, is a thief. He appears to take great pleasure in his work too, from his tendency to giggle gleefully while stealing from unsuspecting people like the LEP (9.332). Out of everyone, Mulch is probably the character that would identify most with Artemis, though Artemis is far more ruthless, since his main goals are to get rich and live free.
Unlike Artemis, however, Mulch seems to have boundaries, since he steals two dozen gold bars from the LEP ransom stash instead of making grand plans to take the entire hovertrolley. He might be a kleptomaniac, but Mulch also only takes what he can carry.