Twins Zack and Cody trade the suite life at home for classrooms with a view aboard the SS Tipton, where they and their fellow students at 7 Seas High learb that life isn't always smooth sailing.
Prankster and eldest twin (by several minutes, anyway). Not much of a studnet, but merits an A+ in shenanigans and impressing the ladies. Serves up a mean juice bar smoothie.
Studious, sensitive twin and resident towel boy. Wise beyond his years, he oftens rescues Zack but can't quite avoid getting caught up in his latest schemes. Crushin' big time on fellow 7 Seas student Baily.
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 Hig, she's adjusting to sharing a small cabin Bailey. Yay, London!
Kettlecorn, Kansas cutie who went from small town life to high seas strife as London's unwanted roommate. Quickly wins over London - and Cody - with her sweet, no-nonsense attitude and determination.
Ultra-refined "meanager" of the SS Tipton and chaperone to Zack, Cody, and London. Long familiar with the twin's zeal for mischief, he tempers his irritation over juvenille pranks with genuine affection for the twins.