Juke

 is the son of Carlotta. Centuries ago, Endora and Carlotta planned an arranged marriage between Juke and Samantha. Samantha was unaware of the arrangement until Carlotta arrived to set the betrothal in motion.

Juke is a wimpy warlock, who needs help from Samantha to learn to stand up to his mother. Afterwards, Carlotta frees Darrin from a spell and Juke is free to marry whomever he wants.