Cosmo the seedrian

Intro Cosmo the Seedrian is a main character who appears exclusively in the third season of the anime series Sonic X. As the sole survivor of her plant-like alien species, she joins Sonic and his friends in their war against the Metarex, developing a close relationship with Tails before making the ultimate sacrifice to save the universe. Backstory and purpose Destruction of her homeworld: Before Cosmo's birth, her home planet of Green Gate was destroyed by the Metarex. Her mother, Earthia, was the leader of the Green Gate council, but was killed after the Metarex boarded her refugee ship. Spy for the Metarex: The Metarex implanted Cosmo with a tracking device and a spy mechanism that allowed them to see and hear everything she did. She was unknowingly being used to track the heroes during their search for the Chaos Emeralds. The Metarex referred to her by the codename "White Seed". Joined Sonic's team: After escaping the Metarex, Cosmo fled to Sonic's planet and sought his help. She joined Sonic, Tails, and the other heroes aboard the Blue Typhoon to fight the Metarex and recover the scattered Chaos Emeralds. Key character facts Kind and gentle personality: Cosmo is portrayed as kind, gentle, and resourceful, though she is also clumsy and prone to feeling immense guilt over her species' fate. This survivor's guilt often caused her to rush headfirst into danger. Romantic relationship with Tails: She develops a romantic connection with Tails over the course of their journey. In the Japanese version of the finale, Tails even confesses his love for her. Family: Cosmo's family members include her mother Earthia, her older sister Galaxina, and her father Lucas, who transformed into the main villain, Dark Oak. In the original Japanese version, her mother created the Metarex out of spite for Lucas. Sacrificial death: In the final battle, Cosmo fuses with Dark Oak to immobilize him, creating a window for Tails to destroy them both with the Sonic Power Cannon.