The WORST xxxx?

Support KhaZix is pretty high up there. No goddamn CC, isolation is a lot more ineffective against 2 champions, pretty reliant on some sort of feed power.

Jungle Nami, very high mana costs, and just is not a jungler

Heimer Support

It's not like he can't run bot lane, it's just that his turrets auto push the lane and steal CS or cause it to be lost :3 Your ADC has to be willing for that to happen :P

karthus adc

yasuo in urf

Heimer Support.... omg cancer.

Janna AD can actually jungle. Dont ask.

Nah, the worst jungler may be Ryze. He simply cant clear without levels.

Leona top was actually meta in S2, and up to this day it can provided she finds a jungle able to camp her lane.