Whats the champion you hate to see on your team?
I'm honestly tied with 2...
Tristana's..
I know I'm mostly likely going to be in for a bad time when I get a tristana on my team. Over all not a bad champ at all, and I know even the tristana players that do this are not bad players, but...
99% of the time it seems like they always end up saving the enemy multiple times with their push back on the ults... Seriously.. stop doing that >.<;;
Tristana's ult is not a damn execute.. It's so hard to land as a finisher move, and usually the enemy will survive with barely a sliver of health even though he was more than dead to rights before the tristana tried to take the kill with her ult..
Tristana's ult has such a huge diversity in usage I almost never see tristana's use, and that's honestly why she's on my list, purely due to the missed oppertunities that I never see happen.. Like Tristana pushing an enemy adc, or even front line into a wall with her ult right off the bat, allowing them to be easily cc'd, and focused, especially slippery champslike shaco, fizz, ahri', etc. That mini "Stun" they get due to the animation push back against a wall that's too thick can be a huge turning point, but I NEVER see it.. instead... welll yea... team uses everything on 1 champ only for them to get away with 10hp cuz tristana wanted to try to take the kill with the ult.. ugh..
Teemo's
Yes even teemo's on my team.. because a vast majority of time they sit in top lane, doing literally nothing all game, then BM, and whine about how bad the rest of the team is because we can't 4v5 while he sits in top lane barely pushing and refusing to help...
- They all decide to towerdive without their ult or straight up forget to use it
- I only see Lux "supports" and when they're on my team, they're clueless as fuck. They eat every bit of poke the enemy has to offer and has a Blitz/Thresh/Nautilus magnet attached to their champion's model.
- I dive in, I get ulted away.
- I don't think I've ever played with a Draven on SR that didn't flame, int or straight up throw the game.
and
never lost a game against one, never won with one on my team, really fun but gets smashed by good midlane champs 
but i lm a jungle main so my chances of having one on my team is minimal
I meet tend to feed from cockiness, being "counterpicked" or feeding bot lane. It is so hard to get a good Talon that I'd rather have an
Mid. (One of my latest games with an Ally
they are always shit
because if she's on my team she will go 0/9/0 and say "gg report my team" and if she's in the enemy team she's gonna one-shot me with her spear.
(if I see him building full AD, I know it's going to be 4v5)
(same building full AP, but on some rare occasions the player can truly be a god as full AP nunu)