This is how Princess Midnight Sparkle and Dark Rigby rise goes in Ryan's Friendship Problem.
Twilight Sparkle: I now have lot of magic in this device. And now I am going to use it!
Delta Brony: No! Don't do it!
Thomas: Twilight, you have to get away from there!
Twilight Sparkle: Now witness MY TRUE POWER!
Rigby: Look out below! [gets engulfed in the magic with Twilight]
Delta Brony and Thomas: TWILIGHT!!!
[Twilight and Rigby transform into Midnight Sparkle and Dark Rigby]
Midnight Sparkle: Yes! I can feel the magic flowing through me!
Dark Rigby: OH YES! I can feel this new found power in me too!
Delta Brony: Princess Twilight, look at yourself. Do you realize what you've become?
Midnight Sparkle: Twilight? I am Princess Midnight Sparkle!
Thomas: WHY ARE YOU DOING THIS?!
Midnight Sparkle: I was made to learn what magic can really do. And there's no stopping me!
Thomas: Oh, no! What I have I done?!
Ryan F-Freeman: Rigby! What happened to you?
Dark Rigby: Rigby? I.... Am... [record scratches] Wait. Midnight, who am I?
Midnight Sparkle: I don't know.
Crash Bandicoot: What will Delta Brony call you now? Midnight Rigby? Dark Rigby?
Dark Rigby: What was the second name?
Crash Bandicoot: Dark Rigby.
Dark Rigby: Ok. [clears throat] Rigby? I.... Am.... Dark Rigby!
[Ryan and Crash gasp]
Mordecai: Why are you doing this with Twilight?
Dark Rigby: Because, we are made to understand what magic can really do and I'm a hero. Any villain who try to deform Sunset will be exterminated!
[Midnight kissed Dark Rigby on the cheek]
Thomas: Twilight? What does Rigby and you look like?
[Midnight flies to Ryan and Thomas]
Ryan F-Freeman: Twilight? You still my friend?
Midnight Sparkle: Afraid not, Ryan.
Mordecai: And where did Delta Brony come from?
Ryan F-Freeman: Look, Twilight. You got magic but I do too. You remember that and me?
Midnight Sparkle: Yes, Ryan. I think you got Dark Ryan as a part of you.
[Midnight opens a portal to the human world and she and Dark Rigby fly through it]
Ryan F-Freeman: Delta! Come with me!
Crash Bandicoot: [jumps after them] I'll see you, Ryan!!!
Matau T. Monkey: May I come with you, Master Ryan?