Jack Baxter

Appearance
Jack Baxter is a short and stoic spy, often described with a square jaw and a salt n peppery buzzcut. He also has freckles just like Scarlet which made his nickname given by the Ultra Violets as "Lil Freckles"

Personality
As a spy, he is cool and collected, often speaking in a strange way. He is tough and doesn't let his emotions show as a spy. He is also protective by giving private information to The Ultra Violets just to let his spy partner Sidney Bristow go to the bathroom and by saving Scarlet from getting strangled later in the book

Develon Louder:
Develon is Jack's boss and later revealed to be Jack's mother, their exact relationship is never mentioned or seen. However, Jack seems to be a very obedient son to Develon by following her every orders with no hesitations, even mentioning that his mother can be very demanding at times. Jack's reaction to Develon blaming him for the Lilac Attack is not seen or mentioned

Scarlet Jones:
Jack considered Scarlet as an enemy to Beautek, Assigned to take her and The Ultra Violets down.However, he saved Scarlet from Karyn during Opaline's birthday party. When Scarlet asked the reason he saved her, he only shrugged and only said that he's curious for her big stage debut, mentioning that "How many Lil Orphan Annie's has a black belt in taekwondo?" as a cover for his real reason,which is unknown. He does however looses his tough facade a little with Scarlet, when he allowed himself to smile when Scarlet complimented him and shook hands with Scarlet to make amends. After the events of the Lilac Attack, Jack shook hands with Scarlet claiming that she is a worthy adversary and is impressed by her fighting skills. It is also implied that Jack developed a crush on Scarlet and vice versa, but their relationship for now only remained as rivals

Sidney Bristow:
Jack acts very stern and often scolds him for messing up on their missions because of his clumsiness and getting caught by the Ultra Violets so easily. However, Jack gave away private information to the Ultra Violets as a promise to let Sid use the bathroom, showing that he protects his partner even if it means his job is on the risk

Trivia

 * Although Jack is described with salt n peppery hair, his hair colour changed into brown when he appeared on the cover of The Ultra Violets: Lilac Attack Brunette Jack.png


 * According to the creator on Twitter, he's into Broadway musicals and Metal music