What do u think about ekko?

yeah he is pretty good and also easy to play, you just constantly push the wave in early game and look for roams later on if you can't beat your lane

He is good

He's good to the point of being broken. His AP scalings are ridiculously high.

What's OP and what isn't doesn't matter if you have to ask the forums for what's OP. Your ELO isn't high enough for it to matter, play what you're good at to climb.