Sonia the Hedgehog

Sonia the Hedgehog is a character from the Sonic the Hedgehog fandom.

Character
Sonia is Sonic and Manic's triplet sister in Sonic Underground. Her main weapon is an electric keyboard capable of shooting lasers.

Het

 * Ashonia - the ship between Sonia and Ash Mongoose
 * Bartonia - the ship between Sonia and Bartleby
 * Espionia - the ship between Sonia and Espio the Chameleon
 * Knuxonia - the ship between Sonia and Knuckles the Echidna
 * Mightonia - the ship between Sonia and Mighty the Armadillo
 * Rayonia - the ship between Sonia and Ray the Flying Squirrel
 * Shadonia - the ship between Sonia and Shadow the Hedgehog
 * Silvonia - the ship between Sonia and Silver the Hedgehog

Femslash

 * Amsonia - the ship between Sonia and Amy Rose
 * Blazonia - the ship between Sonia and Blaze the Cat

Canon
Most romances in Sonic Underground involve Sonia and a male character.

Knuckles the Echidna

Bartleby

Dingo

Dingo has a crush on Sonia, although Sonia does not return the feelings. The two are enemies since Dingo is working for Dr. Robotnik.

Fandom
AO3