Catwoman, real name Selina Kyle. Selina's past is marked by poverty and loss. After the death of her parents, she ended up on the streets, where she learned to get by with skill and intelligence. She later trained herself to become a master thief, specializing in jewel theft. As Catwoman, she uses her acrobatic fighting style, her whip and her sharp senses, which make her seem like a cat. Her relationship with Batman is complex, marked by attraction and conflict. Although they are often on opposite sides of the law, they are united by a deep mutual respect and a romantic tension that always brings them back together. Catwoman is known for her moral ambivalence: she steals, but follows her own code of honor and sometimes stands up for the weaker.

Harley Quinn, originally Dr. Harleen Quinzel, worked as a psychiatrist at the notorious Arkham Asylum in Gotham City. She was a talented and ambitious scientist who specialized in the psyche of criminals. Her goal was to understand the motivations of the most dangerous inmates and rehabilitate them. At Arkham Asylum, she fell under the charms of the Joker and became his chaotic accomplice. Harley is a talented acrobat and hand-to-hand combatant, often fighting with a giant hammer or baseball bat. Although often portrayed as insane, she is highly intelligent and skillfully uses her psychological skills.

The series "Dexter" follows the life of Dexter Morgan, a forensic blood analyst who works for the Miami Metro Police, but is also a serial killer. He targets other criminals who have escaped the law and has a strict "morality" that guides him. The story explores themes of identity, morality and the duality of man. In “Dexter,” the main characters are characterized by their multi-layered characters. The protagonist is a brilliant blood analyst with a dark secret. He has a complex personality that has developed from his childhood and traumatic experiences. Despite his criminal tendencies, he shows a human side, especially in his relationships with family and friends. A central character is his sister, who is portrayed as an ambitious and dedicated police officer. She often struggles with the challenges of her profession and the moral dilemmas that come with it. Her relationship with her brother is characterized by deep trust, but also tension. Another important character is Dexter's partner, who plays a loving and supportive role. She brings warmth and normality to his life, but has no idea about his secret activities. The dynamics between these characters show the conflicts between everyday life and the hidden life that Dexter leads. In addition, there is a mentor who has influenced Dexter's moral compass. He taught Dexter how to control his dark impulses and plays a crucial role in his development. The relationships and interactions of these characters are central to the emotional depth of the series and add to the tension of the plot. There's also LaGuerta, a high-ranking investigator who often works with Dexter and his sister Debra. She is ambitious and has a complex relationship with the other characters, especially when it comes to professional rivalries and personal conflicts. Brian Moser, also known as "The Ice Truck Killer", is Dexter's biological brother. Since Brian wanted to kill Debra, Dexter had to kill Brian.