What are the motifs in Artemis Fowl by Eoin Colfer?

Each of the main characters in Artemis Fowl is tied to others through bonds of friendship, although the bonds are at times complicated. Butler is tied to Artemis and Juliet, while Root is tied to Foaly and Holly. Their actions demonstrate the lengths that individuals will go to in order to protect those close to them as well as how those relationships are complicated by differing power levels.