I know Star Guardian Neeko's familiar is cute but

{quoted}

Why didn't she end up with a cute chameleon familiar instead of a Frog? Kinda makes sense?

why does zoe end up with an octopus?

Because of her gameplay reveal video. And Odyssey Yasuo already has a similar kind of pet anyway, though he doesn't use it in his attacks.

little too on the nose ain't it?

Because the Frog was what was part of her champion teaser when she first came to the game, so it makes much more sense. https://www.youtube.com/watch?v=Lh_n4mQZthQ