I can't believe noone mentioned yet: the Drizz't clone.
We actually did fight a "pink dragon" once in a "fairyland" demi-plane (this was years and years before anyone ever heard of a "Feywild"). Breath weapon ensnared and slowed you in a quickly solidifying cloud of cotton candy.
Not a trope, certainly, nor even (at the time) did we think it hokey. Didn't enjoy the d4 round to "eat your way out" of it and even less so the debilitating minuses to our "to-hits" from the "feeling sick to your stomach from eating so much cotton candy" for a few rounds after that.
Neither here nor there, just a memory that surfaced when I read about the "pink dragon" upthread. </off topic>
Back on topic...other tropes that grate my nerves:
1) The 'Part-Everythings"...you only have 2 (count 'em, TWO) halves to make a hole. "Quarters" shouldn't figure into the equation anywhere. Forget about your paternal grandfather's aunt's triste with a vampire...ugh.
"I'm half-demon/quarter-dragon/quarter grey elf...and I get all of the special abilities there of"...Just...my skin's crawling just typing it. brrr.
2) Vampire PCs...Werewolf PCs...Drow PCs..."Monster" PCs, in general (not just the Drizzt-clones). But I'm "good"...or have a soul...or have complete control over my dark cursed animal impulses....ugh.
3) As someone mentioned, the "We're all unique" party...or even half-the party. "I'm the only one of my kind who has done X [has a good alignment or came to the surface world or doesn't hate dwarves or even exists -See "part-everythings" above.]
It's totally normal that this dragonborn and this halfling and this half-ogre and this high elf and this orc with a half-giant girlfriend and her goblin valet are all just traipsing into the human farming village together. Why's everyone running? What do these guards want? Why won't the bartender serve me?!
Grates my aforementioned nerves.
By the same token, flip side, I enjoy a goodly round or limited run of "classic trope party"....You know the one I'm talking about..."Long-bearded wizard, elf with a bow, dwarf with an axe, halfling rogue and loner humanish rangeresque guy" sometimes throw in the "lovely healer cleric" in tow and/or "shining knight".
It's fun/nice to get back to the fantasy "roots" every once in a while, it's true.
But sometimes or if that's the only kind of character a particular player makes - "I'm an elf archer with sick shield-boarding skillz...just like Legolas. BUT...(wait for it)...I have black hair!" Yesssss, that's toooootally different.
"I'm a female fighter in a chainmail bikini completely scar free and beautiful...but it's +3 chainmail!"...magnetically draws the weapons to the three, distinct, armored parts, I suppose.
"Your druid has a wolf that follows her around and does everything she says without question? Really. You don't say?!"
It just gets tired after a while....As, I suppose, any trope does. That is one of the contributing factors of becoming a "trope", isn't it?
I don't want to poo-poo anyone's fun! Far from it! But TRY to be creative...at least a little.
You don't have to be totally 'gonzo' to not be a trope.
Please...for me. <bats puppy-dog eyes lovingly>
[EDIT] OO! Just remembered another one...
4) Non-human (or, at least, half-orc) Barbarians!
Sticks in my craw like nobody's business!
Yes, it's completely reasonable that your city-dwelling halfling should be/have access to barbarian-like abilities and skills. OH! He's from the outskirts of society, you say? Raised by a pride of saber-toothed cats, was he? Well then, makes total sense.
Grrr.[/EDIT]
--Steel -give me "Conans" or give me fighters- Dragons