Dermott is the son of Thaddeus Venture and Nikki Fictel. He was conceived when Rusty had sex with 15 year old Nikki, believing her to be 20. Nikki's mother blackmailed Rusty by threatening to reveal the incident to the tabloids. Rusty paid them off and never saw Dermott as a baby. Dermott was raised to believe that his grandmother was his real mother so that Nikki, who he believes is his sister, wouldn't have the burden of caring for him when she was a teenager. Dermott later attends the funeral of his Jonas Venture Jr. .