Prankster and eldest twin (by several minutes, anyway). Not much of a student, but merits an A+ in shenanigans and impressing the ladies. Serves up a mean juice bar smoothie and a wicked game of b-ball.
Studious, sensitive twin and resident towel boy. Wise beyond his years, he often rescues Zack but can't quite avoid getting caught up in his latest schemes. Crushin' big time on fellow 7 Seas student Bailey Pickett.
Ditsy heiress with a good heart beneath all that Atora Vitali. Originally tricked by her absent father and Mr. Moseby into enrolling in 7 Seas High, she's adjusting to sharing a small cabin with Bailey. Yay, London!
Kettlecorn, a small town cutie finds high seas strife as London's unwanted roommate. Quickly wins over London - and Cody - with her sweet, no-nonsense attitude and determination to succeed.
Esteban Julio Ricardo Montoya de la Rosa Ramírez is the bellboy at the Tipton. He speaks in a Spanish accent so not many people can understand him. He has a pet chicken named Dudley who he considers as his best friend. He gives Zack and Cody Martin, the nickname of "Little Blonde Peoples".