Raenef V

A sweet, somewhat naive boy who is the complete opposite of a proper Demon Lord. Though he drives Eclipse to endless distraction, he warms the stoic demon's heart quite quickly. Despite his happy-go-lucky personality (even as a thief), he harbors a dark past, which includes joining the thieves' guild in order to survive because he was an orphan. At first, he is quite an idiot but somewhat cute. However, as the series progresses, he becomes weary of his own sweetness and another side of his personality is revealed. The "other Raenef" is a particularly cruel Demon Lord with high intelligence and a strong grasp of magic. In the end, the two personalities are blended. Raenef IV said he is his child. (Source: Wikipedia)