miss-amazing-gracie asked: What about my bbys Vlad and Dani? Could you swap them?
Danielle Masters was good friends with Jack and Maddie in college, helping them with the protoportal. She had an unrequited crush on Maddie who saw Danielle as more of a sister. After the accident she grew bitter and angry at Jack Fenton, who, to add insult to injury, married Maddie. Maddie never forgot about Danielle, though, naming her son Daniel in her honor.
Cut to twenty years later and Danielle Plasmius is ready to exact her revenge against Jack, only to find his son Daniel has now become a halfa much like her. Her plans change to woo both Maddie and Danny over to her side.
In her more desperate bids for Daniel’s affection, she adopted Vlad, an orphaned kid, and recreated Danny’s portal accident, effectively making a halfa on par with Danny - however, it didn’t work as well this time, perhaps she messed something up, and Vladdy’s powers were extremely unstable and he couldn’t stay in ghost form very long without threatening to drain him of all energy. She tries to use him to befriend Danny and get into his good graces, as means to manipulate him away from Jack.