I've been playing since release and I'm exploring the inner depths of my head, but I simply can't recall any weird persons other than the usual douchebags, hotheads and people with complete lack of propriety sense and situational awareness.
One person comes to my mind though, he is the closest one that fits the term: weird:
3 months ago we recruited a 16 year old resto shaman from Sweden (not that his nationaly matter in this case).
One of our raiders talked to him in a pug ToC run on his alt and thought he was a nice kid. He didn't really do any fuckups and seemed mature, so he asked him to make an apply since he was interested in joining us and eventually took him in, although he was below our requirement of 18.
At first everyting seemed fine, although he wrote *alot* in guildchat, but I guess he was just happy to be in our guild.
But on our first raid day after he joined, he kept whispering our RL and officers because he wasn't invited to raid at first. Our guild management had told him, like we tell every applicant, that they are invited to raid when they see fit.
We did some hardmodes that weren't quite farmable yet, (Lady, Putri and Sin), so we switched applicants in and out to test them. The most promising ones were kept at the harder fights.
The kid proceeded to do this more or less every raid night.
On top of that, he continued to write alot in gchat about various kinds of stuff, sometimes it would get a tad out of hand.
One of our officers is female in her twenties and she never had a problem communicating on vent during raids, this seemed to arouse the kid.
He began to spam gchat and whisper her that he was into "mature" women and loved all her posts on our website because she had been discussing science with some of our members, which apparently was a big turn on for him.
What do young boys do to get a girls attention? Thats right, they tease, pull their hair, hides their stuff etc.
He had an alliance alt and kept waving, /kissing and ganking the warrior alt of our female officer and kept relogging back and forth to taunt her about it. Needless to say she was genuinely pissed.
Basicly we told him over the course of many weeks to relax, calm down and just act more mature and he should really work on his sense of situation in general.
We put up with him because he was an ok raider and somewhere in our minds we pitied him.
2 weeks later our members finally got fed up and plain up wrote and : "Shut the godddam fuck up" in gchat and Vent continuously whenever he wrote or said something.
We had to kick him, every member in the guild were ready to choke him if they ever meet him IRL.
As a bonus, some weeks later I did weekly in Ulduar and behold, his alt warrior was in raid. He then proceeded to whisper me: "Hey man, nice to see you etc etc etc. Could you need on the Sword from XT hardmode if it drops and give it to me?"
From what I've heard from people in the guilds he later joined, he kept doing the same shit as he did in our guild.
Some people are just............