"Hello, me, meet the real me!"
— Megadeth, "Sweating Bullets"
"And I'm a million different people from one day to the next..."
— The Verve, "Bittersweet Symphony"
"Isn't it true that at these times [Fred Flintstone] often descends into a delusional state, sometimes actually adopting another person's persona?"
— Harvey Birdman, Harvey Birdman, Attorney at Law
"I used to be schizophrenic, but we're fine now."
"There's just one problem... you're talking to the wrong Harvey."
—Harvey Dent, Batman: The Animated Series
"That wasn't me, that was Two-Face!" / "Harvey's not here right now!!!"
— Harvey Dent / Two-Face, Anytime (t)he(y) shows up as the main villain.
"When you want to do something as Nana, you can be Nana! And when I have something I need to do, I can come out."
— Yaya, Othello
"Schizophrenia... When the left hand doesn't know who the right hand is killing!!"
— Tagline for the film Schizo (1976)
O'Malley: Get out of my head!
Doc: Technically, it's my head. But I don't mind sharing!
Fluttershy: You just want new Fluttershy to be a doormat like old Fluttershy! But old Fluttershy is gone!
Pinkie Pie: New Fluttershy... old Fluttershy...!?
Rarity: What happened to nice Fluttershy? We want that Fluttershy back.
Fluttershy: No, you want wimp Fluttershy. You want pushover Fluttershy. You want do-anything-to-her-and-she-won't-complain Fluttershy!
Pinkie Pie: Nyaaaaah! Too many Fluttershies to keep track of! Make it stop!
"Mr. Walker owns a motorcar and considers himself a good driver. But, once behind the wheel, a strange phonomenon takes place. Mr. Walker is charged with an overwhelming sense of power! His whole personality changes! abruptly, he becomes an uncontrollable monster! A demon driver! Mr. Walker is now MR. WHEELER, a motorist!"
Good!Krieg: I don't know the dead man. Probably didn't deserve what he got. Doesn't make him special, though. All kinds of people die out here: the innocent, and the not-so-innocent. If I'm lucky, he hasn't noticed me yet. I want to warn him, to tell him to run, to hide, to get out of sight so I don't have to kill him. That's what I want to say. But what actually comes out of my mouth is-
Krieg: I HAVE THE SHINIEST MEAT BICYCLE! (chop!)