Tails' girlfriend on sonic X. they start to develop feelings toward each other during the course of season 3. She comes to warn Sonic & friends about the metarex, a group of alien robots that steal planet life. In the end she transforms herself into a tree and envelops herself around the metarex planet to immobilize and stop them from destroying the galaxy. This gave tails the opportunity to destroy the metarex for good with his sonic cannon but at a price: cosmo's life. The fact that Tails had to kill the one he loved makes many fans consider it the saddest anime moment in history.
(shot destroys the metarex and cosmo)
Tails: COSMOOOOOO!!!!!!!!!!!!!
Cosmo: tails whenever you miss me just look for me right beside you.
(cosmo's spirit kisses tails then immidiately dissapears into the afterlife)
RIP Cosmo the Seedarian
A visionary, a quirky lad who churns out pure art. His music makes you dream of having a picnic of fruit you picked with your love, chowing down while sitting atop a tree stump in a forest far from any other humans, you're both covered in dirt and singing songs about the old gods, chunky birds, and cool bugs. He makes videos performing his songs where they blend so perfectly with the location, and it's absolutely beautiful. He puts his soul and his thoughts and his interests into his creations and he needs to be more well known for his work. His songs range from crying near a pond over a lost love to exploring an old stone castle with your lads.
"If I ever seeCosmo Sheldrake in concert, I'd problably experience some type of spiritual awakening."