Pinkie Pie: Private I - The secrets of my friends

Cloud houses are amazing Mr. Journal! They're so squishy and plushy but they don't break open even if you jump really hard! I gotta see if Twilight can give me wings like she did for Rarity, I didn't know there was so much up here!

'Shy and Dashie are so lucky! I wish I could fly too! I mean, think of the possibilities!

I could go everywhere super-fast, meet new friends in the clouds and have parties in the sky! IN. THE. SKY! And I'd go up to my friends and I'd be all "Surprise! It's Pinkie Pie"!

Dashie's house is amazing! I wish she invited me to visit more... Oh wait. She didn't invite me this time.

Stupid, stupid Pinkie Pie! You told Mr. Journal you were just gonna look around to remember Dashie and you played around her house!

I'm just gonna check out Dashie's room and then I'm leaving. I Pinkie promise this time.

This... Is unexpected. I'm in Dashie's room.

And there are... THINGS sitting all over the place. They're all metal looking and make weird beeps and flash all kinds of colors. I... Don't know what this is. Her bed is the only normal thing in the room, and even it has black stains all over the sheets. I expected something more... Wonderboltsy? The only thing I even see about the Wonderbolts is a little photo of Spitfire on the nightstand.

Hold on... there's something sticking out of the drawer...

Proto-D45}-{  Functions inconclusive. Insufficient data to judge efficiency. Model likely defective. To be reprogrammed/scrapped.

What? That sounds like... OMIGOSH. MR. JOURNAL. Do you realize what this means!?

Look! D45}-{ almost looks like Dash! Mr. Journal, do you think?

But she wouldn't be...

She COULDN'T be...

But all the little machines...

There has to be more than just this... I'm gonna make sure.

The stains on the bed... I just checked. They're oil.

What kind of pony would be handling oil in their bed?

Nopony would.

But Dashie did? No, for you see, Mr. Journal, I have concluded that Rainbow Dash is in fact, not a pony.

She is.

Secretly.

A ROBOT!