Tailsmo

Tailsmo is the het ship between Tails and Cosmo from the Sonic the Hedgehog fandom.

Canon
Tails and Cosmo are together in season 3 of Sonic X.

In the Japanese version of the second last episode, when it's up to him to fire the Sonic Power Cannon, Tails was extremely hesitant to do so, but with the help of Eggman's reassurance, Tails screamed "I love you, Cosmo!" just before he fired the cannon towards her and Dark Oak, and although in the English version he never bluntly used those words, it is strongly implied throughout the episode that Tails simply didn't have the courage, even at the end, to admit that he loved her. Cosmo admitted in the original Japanese that she will always love Tails before dying, while in the English dub she said that will never forget him.

Fanon
Tailsmo is a very popular ship in the Sonic fanbase and one of the most popular pairings for Tails, alongside Taiream and Tailsey.

It mainly has a rivalry with Taiream in fandom, as people who shipped Cream and Tails together were pretty upset with the arrival of Cosmo, then afterwards many of them hated on her due to her canonical romance with Tails as there aren't any official romantic Taiream hints in the general series.

Some fan works include Skye and Melody Prower (Tails and Mina Mongoose's children in Light Mobius from the Pre-Super Genesis Wave universe) as Tailsmo children instead. In this case, Melody is changed from a mongoose to a seedrian (a fan term for Cosmo's species).

Both Tailsmo and Taismo are frequently used names for the ship. One name might have originated as a misspelling of the other but it is unclear if this is the case. One possibility is that the original "Taismo" was replaced with the increasingly popular "Tailsmo" due to the latter being a more seamless transition between the two characters' names.

Fandom
FAN FICTION
 * Tails/Cosmo on FanFiction.Net

DEVIANTART

PIXIV

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Variations

 * Tailsmooey - the polyship between Tails, Cosmo, and Zooey
 * Taireamsmo - the polyship between Tails, Cosmo, and Cream the Rabbit