Because of the mysterious nature of the Fair Folk, not much is known about them. However, in comparison to the Unseelie Court, Seelie Court faeries are seen as generally "good", mainly because they are less evil and possess a more lighthearted attitude than their Unseelie counterparts.
Seelie Court faeries expect courtesy and favors to be fulfilled, otherwise, they demand retribution and avenge what they see as insult or offense. While to them, their notions are good and benevolent to humans, the execution and their choice of actions are not as much; they are quite deceptive and self-serving. They are also quite prone to tricks, pranks, and mischief. Though faeries cannot lie, they are not always fully honest, often twisting their words and speaking half-truths.