Darcy Sonic Dash

Darcy Sonic Dash is the lovechild of Sonic the Hedgehog and Rainbow Dash. Her appearance combined elements of Sonic and Rainbow Dash, with Pikachu slippers and a Run the Hedgehog cutie mark.

History
Darcy spent years locked away in a magic bubble because Celestia was afraid of her power. Her power originated from the love she felt for Run the Hedgehog, which turned her into an alicorn more powerful than Celestia and Luna. Upon meeting with Run, she found herself rivaled by Valentine the Mink whom also wanted Run's heart. After learning of this, Darcy tied up Valentine and suspended her over a pool of alligators, crocodiles, and Vector the Crocodile. The two women continued to fight over Run until making peace and choosing to have sex with each other instead, leaving Run left out.