"Out of all the perfect clones Mewtwo created, one remained the most loyal. The lone Rapidash refused to part with the one she loved most. She offered him companionship, a ride, warmth, love. Whenever he felt lonely, she would talk to him. If he ever tired, she would become his steed. On a cold day, she will become his pillow and share her warmth. If he ever felt depressed and was hurt, she would show him her undying love and loyalty to him. With a tear, Mewtwo nods and together, they start a whole new adventure."

A cute idea I thought of. Finally, I did a drawing of my two most favorite Pokemon, Mewtwo and Rapidash. I changed up Rapidash a bit. Gave it the "tassle" tail unicorns and lions are famous for and gave her cloven hooves, as well. I read an article on Rapidash on Bulbapedia and it's pretty much exactly like the unicorn, minus the curing poison.
According to Bulbapedia, Rapidash is known for living/traveling in solitude and are seen mostly in mountains. So if it lives in mountains, the Pokermanz people should have given them cloven hooves, which makes more sense. It makes it easier to climb that way. That's why there are mountain goats, cloven hooves allow them to reach certain high places and stuff. The Pokemon people also made Rapidash waaaaay too small. 209lbs is impossible for a grown horse. No trainer should be able to ride it, especially if they weigh average of 120lbs!

Sorry, random rage moment. Enjoy the pic and the text is full of fail. This was all done on Paint Shop Pro (l33t sk7llz) ;P
Mewtwo and Rapidash belongs to Nintendooooooooo