Princess Marina

"I am Princess Marina, princess of Sea Side."

- Princess Marina

Princess Marina is the princess of the Sea Side Kingdom. She is the daughter of King Varun. Marina is one of the main heroines of Super Mario Bros. X: Sea Side Adventure, then becomes the damsel-in-distress.

Princess Marina is capable of transforming into different forms, containing the spirits of her noble ancestors, like her Gargantuan Form, Warrior Form, Fairy Form, and Young Form. She is also capable to turn back into her original form known as her True Form.

Mario
Marina had admired Mario ever since she saw him for the first time directly after the Mario Bros. saved Sea Side from Wendy O. Koopa. She compared her to her father due to his looks and coolness, as noticed by everyone which turned to be a true mystery everyone wants to solve. But her admiration she had for Mario later developed into much stronger feelings since he returned to Sea Side to save it from the Koopa Troop and the 8 Bits. Despite it was just for a short period of time (longer due to the confirmed first filler arc), Mario and Marina's friendship fast forwardingly became much closer, becoming best friends, which would result him to risk his life to go save her from Ludwig von Koopa and Bowser. Mario was the person Marina trusts the most after King Varun.

King Varun
King Varun is Princess Marina's father. He cares very deeply about his daughter so much. Marina always had to stay in the kingdom because he is too very protective and doesn't want to stay so she could explore the outside world. Despite that, she loves her father so much and also wants to protect his father (it is rather Varun who often risks his life to protect Marina).

Goldian Duck
Goldian Duck confirmed to have met Marina some years after Mario and Luigi saved Sea Side. But she claimed that she doesn't remember him. While she treats him like a pet poorly, she often bullies him and seal him within a cage. While he has a stong will and never gives up, Goldian often frees himself from the cage but ends up engaging Princess Marina in battle. Despite not seeming to get along, they have an amazing teamwork since they both have Water-Elemental techniques.

Toad
Toad and Marina have been friends several years ago. Toad cares so much about Marina.

Trivia

 * Princess Marina was set to appear in Sea Side Adventure as an adult, but now is a teenager instead (despite she is chronologically an adult). However, her teenage form is revealed to be her Gargantuan Form, an alternate form of hers. Princess Marina's true form is confirmed to be her adult form.