Dexter's variety of characters ranged from best to worst, showcasing the show's depth and complexity in storytelling. Some characters like Maria Laguerta and Debra Morgan stood out as complex, well-developed personalities that added depth to the narrative. On the other hand, characters like Miguel Prado and Lumen Pierce failed to deliver on their potential, disappointing fans of the show.

Throughout its eight seasons, Dexter introduced viewers to various characters beyond the titular serial killer, Dexter Morgan (Michael C. Hall). Due to the fact that showrunners Clyde Phillips, Chip Johannessen, and Scott Buck were mindful to fill each episode with a wide variety of different personalities, the gap between the best Dexter characters and the worst in the show is vast. One of the best traits of the show is its variety of characters and the psychology behind them although not every Dexter character felt like a worthwhile addition to the narrative.