"The Loser"
This peep is an interesting one. Someone will come over to the bandstand with a pair of car keys. A few minutes later, the "Loser" is there to claim them. A bit later, a cell phone is turned in to the bandstand. Guess who it beings to? That's right! The "Loser" is soon back to claim it too. A little later, he's back asking if anyone turned in a wallet...
"At Least He Goes To Minyan"
This peep breaks his teeth on the bracha he's honored with at Sheva Brachos. When he gets to the end, he confidently finishes it off "... Yotzer Hame'oros."
"The Repeater"
This scintillating character is invited to speak. Invariably he (for some reason, this offender is always male) will say something like "the next part of my speech was said twice already, but since no one listens to speeches, I can say it again." Then, he'll repeat a Torah thought that has already been shared by a previous speaker or two. For extra credit, he may point this out again after he speaks, as in "maybe you'll hear that thought another six times tonight, if you listen to the rest of the speeches."