What are direct and indirect characteristics of Artemis Fowl?

To answer this, the terms "direct characterization" and "indirect characterization" need to be defined. Both methods are employed by authors to inform the reader about a character in the story: who they are, how they feel, and what they think.
Direct characteristics would be aspects of the character that are given to the reader through the narration. For example, the back cover of many Artemis Fowl books has the following quote:

A genius. A criminal mastermind. A millionaire. And he is only twelve years old.

Before even opening the book, the reader already knows several critical aspects of Artemis's character that will be important to understanding the story.
Indirect characteristics are more challenging to decipher. These are aspects of the character that are shown to the reader as the story progresses. Usually a character's actions, speech, and choices will gradually reveal significant aspects of their character. For example, Artemis Fowl (in the first novel) is involved in kidnapping and extortion fairly early in the book. He demonstrates greed through his actions. Later, his willingness to use some of the gold to help his mother shows the reader that he is not an inherently cruel character. This level of complexity is usually shown through indirect characterization in order to be believable, while factual characteristics such as appearance, intelligence, and history might be given directly.
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