Image imported from derpibooru 
Original Description:
 
When a pair of evil computer viruses threaten to take over the world of Hasbro, Princess Twilight Sparkle recruits tennis champion Serena Williams to help her and the other inhabitants win a tennis game for a chance of retaining their freedom.
 
Cast:  
Serena Williams as herself  
Will Ferrell and Maya Rudolph as Addison and Mal  
Tara Strong as Twilight Sparkle  
Ashleigh Ball as Applejack and Rainbow Dash  
Andrea Libman as Fluttershy and Pinkie Pie  
Tabitha St Germain as Rarity and Princess Luna  
Cathy Wesluck as Spike  
John De Lancie as Discord  
Nicole Oliver as Princess Celestia
 
Additional voices/cameos include Peter Cullen as Optimus Prime, Jason Marsden as Duke, Britt Phillips as Jem, Andy Richter as a trio of Furbys, and appearances of John and Patrick McEnroe.
 
 
Yes, it’s as cheesy as it sounds