Kennen is cancer
Kennen is like a more cancerous version of Annie. They both have burst, but unlike Annie, Kennen also has mobility, so he's even more annoying to deal with than someone like Annie, who can easily be avoided with proper positioning (not counting flash obviously). It's also super easy for him to get his stun off, since most of his abilities aren't skillshots. So pretty much all he has to do is smash the keyboard with his face and he gets a free stun.
