Princess Zelda

Princess Zelda (ゼルダ姫, Zeruda-Hime), from the Legend of Zelda universe is the princess of the Hyrule Kingdom, as well as the leader of the sages. She is a playable character in both Super Smash Flash and Super Smash Flash 2.

Character description
Zelda is a recurring titular character of the Zelda series and makes her first debut in The Legend of Zelda for the NES and has appeared in all Zelda games to date in some way shape or form. Due to having several different incarnations in the Zelda series however, she has played several different roles. Throughout much of the Zelda series, aside from Skyward Sword, she is the princess of Hyrule who is frequently kidnapped by Ganondorf only to be rescued by the one chosen by the gods and goddesses: Link. However, there are times where she's aided Link in battle, like in Ocarina of Time. She even saved him once in Phantom Hourglass.

In Super Smash Flash
Zelda is a starter character along with Link. She has to the ability to transform into Sheik to gain new moves and speed. She has 5 different attacks showing here:

In Super Smash Flash 2
Zelda is a starter playable character along with. She can transform into as being the down special of her. All of her attacks and special moves are directly from the Super Smash Bros. games. Her sprite design is based on her appearance in The Legend of Zelda: Twilight Princess. She is ranked 3rd of A+ tier on the current tier list as a single character, and she is ranked 1st if she combines with Sheik (also known as Sheilda).