Cosmo the Seedrian

Cosmo is one of the main characters of Sonic the Hedgehog series. She is a female child of a plant-like alien species whose homeworld was destroyed by the villainous Metarex and she is the only surviving member of her species. She is an current ally of Sonic and his friends, and love interest of Miles "Tails" Prower.

Cosmo made her debut return on Sonic Adventure 3. She was return to life after the recent sacrifice to save her friends from Dark Oak. During the loss of thier friend, Cosmo appears as a pure spirit hoping she will come back. During the events with Team Rose, Cosmo was reborn, has finally return and joins Sonic and his friends.

Personality
Cosmo is a kind and gentle character, though she often feels guilt because she was unable to save anyone from her home planet ever since the destruction of the Metarex. She also seems to suffer from a low self-esteem issue, often calling herself "unworthy" or blaming herself for the hardships that she and her friends had to endure. Cosmo also dislikes violence, but acknowledges that fighting is sometimes a necessity, although she herself is unable to fight. Cosmo can be somewhat clumsy, but she is also quite resourceful; she also has a penchant of getting into trouble.

Powers, Abilities and Skills
Cosmo does have a few abilities, being a plant herself, such as having the ability to empathize with plants, trees, or the planet and determine their state of life. Cosmo can jump high and gently float down with the aid of her skirt. She also appears to be able to unlock the power of a secret gem.

She also shows heavy endurance as she is able to recover from powerful attacks quickly as seen in episode 58 where she quickly arrived back to attack a Metarex with fruits after being sent flying into the air by a heavy branch shaped like a club. She is able to read and decipher the Metarex language (most likely given to her when the Metarex implanted the signal while she attempted to escape).