Kennen, one of the weakest champions period.
Kennen is so weak it's pathetic. Every single ability he has is less powerful than it needs to be.
No damage, extremely high energy costs, very little range, horrible energy recovery, very long cooldowns, very short duration stun that requires huge setup. Everything about this champion is just wrong. And the biggest failure of all: he has to run through enemy champions, yet he gets zero CC protection or CC reduction. On top of all that, he is squishy, yet most of his damage is point blank range.
This champion needs a complete redesign. Out of all the champions I have played in this game, Kennen feels by far the weakest.