Mario

"It's-a me, Mario!"

- Mario

Mario is the main character and protagonist of the long-running and highly successful Super Mario series. He is the greatest hero of Mushroom World. Mario was created by Japanese video game designer Shigeru Miyamoto and also serves as the main mascot of Nintendo. Mario made his first appearance as the protagonist of the arcade game Donkey Kong, released in 1981. Mario is the primary main protagonist of Super Mario Bros. X: Sea Side Adventure, in which he and his friends must save Sea Side and its two monarch from the Koopa Troop and the 8-Bits. He is also the primary main protagonist of the prequel Super Mario Bros. X: Alternate Kingdom, where he and Luigi help Marvin saving Princess Apple and the Eleanor Kingdom.

Invasion of Sea Side
It was implied that Mario, Luigi, Yoshi and Princess Peach came to Sea Side to visit King Varun retrieve their missing companion Toad at the ending of Invasion of Sea Side.

Alternate Kingdom
During the beginning of Alternate Kingdom, Mario was sailing on a boat with Luigi. During their adventure on a boat, there was a huge storm. The Mario Bros. was found unconcious on an unknown world. After waking up, they met a mysterious man named Marvin, who was really worried about something. He requested the brothers to help him save the woman he had fell in love with and save the world from a peril. The brothers accept and begin their new journey on an unknown world.

Sea Side Adventure
Several months later after the events of Alternate Kingdom, Mario went on a new adventure on Sea Side.

Luigi
Luigi is Mario's younger twin brother. After learning that one his friends have gone missing in Sea Side to meet the king, he and his brother have departed the Mushroom Kingdom to Sea Side to rescue them. The two of them have ventured through many landscapes of the Sea Side Kingdom to find Toad, Princess Peach and Yoshi. The Mario Bros. care deeply about each other and always team up together, while the second one Mario and/or Luigi often team up with being Yoshi.

Toad
Toad and Mario are good friends. He is one of his friends who are gone missing in Sea Side and got sealed within a Character Block by Wart. After being friend, Toad joins Mario and Luigi to defeat Wart and continue searching for the others. Mario is also Toad's favorite hero, he often goes sees him everytime there's trouble.

Link
Mario and Link where on bad terms but end up being good friends. As Mario and Princess Peach noticed, this Link is not the same Hyrulean hero whom they met years ago and was confirmed by King Varun to not being a descendant or reincarnation of any of those heroes from Hyrule but a Sea Sidean counterpart of the hero, yet he has an almost identical figure of the Link Mario met long ago. Regardless, Mario still think that he could be a hero, which encouraged Link to continue moving on and venture with him and his friends.

Princess Marina
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 him 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 admires Mario and view him as the universe's greatest hero ever. He saved Varun from Wendy O. Koopa several years ago and became the hero of Sea Side. He reveals to have dreams about his heroic actions everytime and wishes to become stronger to protect Sea Side and fight Mario.

Goldian Duck
Goldian Duck confirmed to have briefly saw Mario some years after he saved Sea Side with Luigi. In Sea Side Adventure, Mario and Goldian became rivals, but Goldian consider him as his loval because he is jealous of his relationship with Princess Peach, who is said to be his soon-to-be wife. Mario is potrayed to be an old man who is in his 60-70 years old by Goldian, but that would include one of his friends like Luigi, Peach, Yoshi and others, which often upsets them.