I've been playing Galio more and more lately and he's definitely one of my favorite champs. I haven't really been matched up against anyone who's been able to just straight up shut me down thus far, but are there opponents that I should watch out for who I maybe haven't gone up against? Like, in either mid or top.

the counter to galio is a hammer gg surrender 4 v 5

Bruisers like Riven and Lee Sin.

AD champs with mean damage.

Riven, Olaf, etc

garen

trolololol galio ult bbye

You can champs like gp, panth, etc to counter him. Pretty much bruisers like someone said. I wouldn't be surprised if someone like graves or sivir could lane vs him either.

A Soraka with Abyssal Scepter and a Malady is your worst nightmare bro....

Riven stomps Galio mid lane. I love going Mid Lane as Riven against Melee AP Casters.