Fizz was a monster in mid lane for the longest time, highly mobile, tons of slows, % on-hit hp and in general a overloaded kit. He typically does most his burst by clicking on you, dodging your skills and ults, and applies lich bane on the attack giving it some ridiculous scaling. Sounds like Ekko to me.
No people still hate fizz more
Ekko feels like ap zed
diana 2.0 or ap-zed are closer to the truth though.
I thought that Ekko is basically AP Riven.
Ekko actually has counterplay. Fizz has one dodgeable skillshot ult, but it doesn't matter because he usually casts it when he is on top of you. You can see Ekko's ghost. You can see Ekko's stun field. You can dodge his Timewinder. He has 3 skillshots.
Haha, I was actually just thinking Ekko is Fizz 2.0. He snowballs really hard and doesn't require his entire kit to one shot you, just like old Fizz.
Fizz 2.0 we have rebuilt him faster stronger better!
RIP 
Fizz can actually kill things. Ekko can't kill anything unless you're moderately retarded.
He has the lowest base/ratios of any AP mid.
I like to think of ekko more as an AP talon. Just with a heal and a stun.
tons of slows,
