Itchy: Look Scratchy, it's our old friend Poochie!
Scratchy: What's that name again? I forgot.
— The Simpsons, "The Itchy & Scratchy & Poochie Show"
Mels: I'm their best mate.
Doctor: Then why don't I know you?
— Doctor Who, "Let's Kill Hitler"
Bruce: Ah, my old nemesis: Cheetah Lee.
Cheetah Lee: Um, who is this?
Bruce: You thought you had defeated me for good, but I, Bruce, fought back from the grave. I will take over the world and take my revenge on you!
Cheetah Lee: I don't think we've met.
Yugi: Those bullies are being mean to Gary Stu!
Joey: Who the hell is Gary Stu?
Yugi: I don't know, but apparently, he's my best friend.
"As legendarily hatable as Mel is, and she is one of the most roundly mocked characters in all of Doctor Who, she's not nearly as misbegotten as all of that... But as poor as much of the writing for Mel is, the larger problem is that she's a companion with a strangely swallowed origin. John Nathan-Turner quasi-famously wrote an origin story for her in his book on the Companions that had her teaming up with the Doctor to stop the Master from an audacious computer hacking attack on the world's banks, which, let's be honest, probably would have been terrible. But it's still preferable to what we got."
"I don't know who Anisa is either, but it's heavily implied she became Jasmine's mother figure after she lost her actual one. If Anisa is that important, why have we not heard of her for 15 years? You can't just invent a character like this when so much already exists without her. Where was she at Jasmine's wedding?"
Ada: You... knew each other?
The Dark Id-as-Leon: Well, the script says I did, but hell if I've ever seen that guy before the cutscene just after the fight with Todd.
Leon: More or less. Maybe it's about time you told me the reason you're here?
TDI-as-Leon: You know, since you're an actual reoccurring character and not someone pretending to be one?
Applejack: So what's with this brother of yours and why haven't we ever heard of him?
Twilight Sparkle: What are you talking about? Of course you've seen him before! He was there when we all celebrated Pinkie's birthday, don't you remember? And he was there when we all went to Cloudsdale together. And he showed up that one time Pinkie went insane for a day. (picture of Shining Armour taped onto those scenes) It's not like my brother just appeared out of thin air and now we're pretending that he was there the whole time.
Pinkie Pie: That never happened! Phhh, lazy writers...