My good friend
(ChristiansCartoons on YouTube) is in the process of making a Portal/MLPFiM crossover animation coming soon to YouTube.
Teaser trailer: [link]
And I will be doing the voice of Discord in the video!
The trailer's already been featured on Equestria Daily, I'm sure you saw, and by the looks of it, this will be SO AWESOME!!!
So help Christan out and support him in making this project by subscribing and watching him, and stay tuned for My Little Portal!
Oh, and one other thing.....THE CUPCAKE IS A LIE!!! lol, I haven't even played Portal yet...