Carl was born in his father's house. But he didn't live long there because his mother turned into a vampire and killed Carla. He moved with his mother to a dark house in Desiderata Valley.
Carl didn't see his mother much. At day she was asleep and at night she was at work to gain some money. He always was in the hands of a nanny. Although, he didn't see his mother much, she learned him all the toddlerskills.
His mother asked the nanny Willow Darga to move in with them. She could take care of Carl when Michelle was asleep. Carl saw Willow as his second mother because he has no contact with his father. He also met Elijah Fischer, unaware he was his half-brother. When Elijah's step-mother, Tracy, discovered they were half-brothers he invited Elijah at home. But he was a little bit scared of his vampire mom. When Elijah turned into a teen, Carl decided to recontact his father. His father said his mother was a murderer.
Carl told the secrets about his mother to Elijah, but he didn't dare to confront his mother with that. Then he met the beautiful girl, Sophie Carr. Sophie confessed her love for him and they started dating. Finally, he confront his mother with her secrets. His mother was very angry after a fight with Willow and she turned Willow and him into a vampire. Carl was ashamed of is mother and wanted to ran away. After her agreement, he turned Sophie in a vampire and they ran away together. They married in secret and Sophie got pregnant. They called their daughter Morgan. When Carl and Sohpie decided to go to college, because they didn't want to be a teen forever, Sophie's father moved in. He must take care of Morgan while they were away.
Carl and Sophie went to Sim State University and moved in at Elijah's and Mara Fischer's home. Her major was Political Science. Elijah and Mara graduated in the second semester of his junior year and when they moved out, Elijah's sister Ellen Fischer moved in. At his last semester, Sophie discovered she was pregnant. She and Carl graduated with the Summa cum Laude honor.
The pregnant Sophie and Carl returned to Fear Valley and they were reunited with their daughter. However, Morgan was a little bit afraid of her parents because she barely knows them...
- Carl's Dutch name is Carlo Visser.