DM: And Sandbar, meanwhile, finds himself in a long crystal corridor.
Sandbar (AJ): So what kind of trap did Cozy have in mind for a pony?
DM: Up ahead, you see two ponies. They look rather familiar. One is a pegasus with a rainbow-colored mane…
Gallus (RD): Wwwhat?
DM: And the other is a white unicorn with a cutie mark of three diamonds.
Smolder (RT): Excuse me??
Rarity (DM): Oh, dahling! Thank Celestia we found you!
Smolder (RT): Is that– No, that's not supposed to be…?
Rainbow Dash (DM): There's a friendship emergency! And we need YOU to help us save the day, Sandbar!
Gallus (RD): Oh my God, NO.
Silverstream (PP): Hee heeeee ha ha ha!!
Ocellus (TS): …I don't get it.
DM: In the future, your legend has spread. Ponies look up to you.
Yona (FS): So it's a hero-worship trap?
DM: But again, Sandbar can react however he wants.
Sandbar (AJ): Oh. My. GOSH!! RARITY! RAINBOW DASH! I'm your #1 fan!!
Smolder (RT): Oh, good heavens…
Gallus (RD): Just… Just TPK us now. Please.
You know, for all the time we spend questing for glory and heroism, there are few things more instantly problematic for an RPG character than actual blindly devoted hero worship. Unless you're the type to mercilessly exploit those kinds of people. (See also: Adoring Fan (Oblivion).)
I'd say there are few things more instantly problematic for an RPG character than actualy roleplaying it's flaws or weak spots. I'd see that as a plus, though, but still.
Collectively, I think my PCs have spent more time trying to woo a pretty face over any kind of hero worship. By a large margin.
There's one player in my local group that likes to play clerics and tends to really fawn over their deity of worship. It has been hilarious whenever we have a scene of that deity showing up.
Spud's commentary makes me think of Kynan from the first campaign of Critical Role. Of course, there are good ways and bad ways to respond to that sort of thing.
Never had to deal with "superfan" NPCs in games I've played, though.
Having past PCs show up as not-allies is completely terrifying, since the players already know what devastation their former characters are capable of. Having them show up as allies can be just as bad, because the players already know what devastation their former characters are capable of.
Yeah, usually is. I once had someone's dead PC show up a campaign later as a villain (the original PC was CN). The lesson I learned as a DM is that if you're wearing rose-colored glasses, all the red flags just look like flags.
I've never had a pc with a hero worship meet them.
I've had the opposite occur, where a pc met the person that killed his family, and also the god that did the same for one unlucky sod. funny enough, the former actually trusts him, the god(des) still wants to kill him.
I've had a PC who hero-worshipped a friend's PC in a game set in the same setting but earlier time. Actually there were quite a few games going on set in that setting, so a lot of my PCs ended up having some connection with each other, though it was mostly just background details.
We kind of ran into this to our detriment in a Shadowrun game that's been on-again-off-again for years. There's a rough bar in the Barrens where we met the fixer for one of our first runs, and we just kind of kept going there. Even got to know some of the staff and took down a local gang that messed with one of the bartenders.
The problem is that we've built up a reputation over time. And since we're regulars at the bar, it's slowly become overrun by the wannabes and hangers-on who think that getting to know is will somehow make them "real" runners.
My players are currently playing the children of the previous party, and they have had to rescue each of the parents one-by-one from a sinister organization of evil.
Past PCs as NPCs? My dear BackSet, that's where I get my DMPC collection... mostly because I knew some pretty cool people doing 3.5 in Job Corps, and the only character not my own that I've lifted, can be played just about however because he's Chaotic Whatever, and operates on the principle of unusuality. If it would make little-to-no sense for the party to open a door in the middle of the dungeon, and have it open into a sprawling megamart ran by a wizard in robes that look strangely like a straight jacket? Why, then, that's exactly when they'll do it... because that's the ground rule for that specific DMPC's use.
Otherwise, I just reuse a few old characters of mine as DMPCs to solve certain unusual problems people have as parties, like "don't get in a bar fight when the barkeep tells you to stop it, because he's really an epic level paladin/monk who just wants a quiet day.", "Don't piss off the town guard, they're really members of the local thieves guild which is headed by an epic level pure thief who is also lawful good", and my favorite, "don't piss off the oldish looking half elf wizard guy, he's also epic levels, but sorc/DD with a dancing granite greatclub (that's baseball bat shaped)"
My barbarian once had three teenagers following her around because they thought she was cool. It made fights harder, because she's nice enough she felt obligated to protect them, even though they were kind of mostly useless and annoying.
When the GM use past characters from the players to put a trap, that could be uncommon but not unheard, but... What if the GM make a bad imitation that everyone could see it's a bad imitation as the PC don't act like that, any story like that?