“Gnar is a pretty visual champion so you can take into account when to poke or avoid him. If he is glowing RED (Max Rage) he is ready to transform into Mega Gnar, if he is glowing BLUE after hitting you 3 times, he gains mobility so keep your distance. You want to keep yourself away from terrain while he is Mega Gnar, otherwise he will simply jump to you, combo his ultimate and slam you into the wall, followed by a barrage of his abilities which will further stun you. The laning phase will consist of him trying to land his boomerang which hits both ways granting him more rage. Catching the boomerang reduces his CD.
“TL;DR - SKILL MATCHUP. DON’T TAKE FREE POKE. CONQUEROR IS RECOMMENDED ALONG WITH SECOND WIND. STEELCAPS RUSH IS GOOD. TRY TO CANCEL HIS JUMP WITH YOUR E.
A Gnar lane is somewhat difficult to play, as a good Gnar will always be out of your range. It is a skill matchup between you two. It is an even lane so the better player will always win. Gnar is slightly more useful than you in teamfights if his team is ahead but he is also prime target to stack 5 off of. You should try to avoid his boomerang poke but you can take D shield along with second wind just to be sure. Phase Rush SOUNDS like a good choice into him but Conqueror is actually the recommended choice. Try to freeze the wave in your side of the lane and then run him down. If you time it correctly, you can use your pull to cancel his jump which is essentially a death sentence for him. Be careful when fighting him at low hp, as with Mega Gnar, he has enough cc to keep you stunned long enough to kill you. Not to mention how his CC allows him to set up ganks very well so keep an eye out for it. Steelcaps rush is great into Gnar.”
“You can't really kill him easily as he will just jump away if you engage on him. He will just poke you with his Q and his W's damage. Get tabis and after he uses his jump then engage on him while it's on cooldown. ”
“Good Gnars will be a pain, especially when get their kiting items. He's generally unpopular right now so I haven't gotten much experience against him yet. Just know you'll be poked a ton and there's not a lot you can do about it early on or late for that matter.”
“Gnar is a little annoying but not too much of a threat. If he is Mini Gnar, you should be able to 1v1 him pretty easily as long as you can catch him. The best way to kill Mini Gnar is to run up to him and charge your Q, most Gnars will instinctively jump away which allows you to let go of your Q as soon as he jumps and cancel it. This will leave him without an escape and could easily kill him. When he gets Mega Gnar, he can be a bit more of a threat. Just watch his rage bar and watch out for when he tries to engage on you. It's very easy to recognize Gnar's pattern and if you choose the right times to fight you will easily win this matchup.”
“Ranged Top laners usually have more range than Thresh, leading to a disadvantage. Gnar's manaless Q can poke pretty well, and though his range is short, it's enough to hurt Thresh more than Thresh can hurt him. That said, Thresh Flay is an incredible ability that keeps Mega Gnar at bay, and can pull Tiny Gnar into danger by any misstep. You don't need to take Aftershock against him, and you have a fair shot of outdamaging him in certain situations (Barely coming out of Mega), but Gnar's jump can be stopped easily by Thresh flay. Use this to your advantage with a Lantern Gank!”
“Usually against rage matchups I wait till lvl 3 or lvl 2 to engage. You want to focus on parrying his 3rd W ring if he isnt going to be turning to mega gnar soon. You can also parry his Mega Gnar W or ult. His E jump is on a fairly long cooldown (22sec) so keep that in mind when looking to kill by doing your full combo.”
“Smash your keyboard it's justified. Gnar is an awful lane, he pokes you out of lane constantly and his E is the perfect escape. Very tricky to flip. Wait for his Mega Gnar before you can do anything and even then it's risky. Your W can cancel his E in both forms, but is generally too slow.
Riot is slowly buffing Mega Gnar, so soon Gnar might be bumped up to being an EXTREME threat.”
“Gnar is mainly annoying, but after a few items he is unkillable for GP.”
“Gnar is a very annoying matchup but as long as you keep a cool head, its manageable. The thing about this matchup is that it is pretty much a stalemate. Once Gnar gets his jump, you won't really be able to kill him unless you use your pull in a way to cancel his jump. Doing this is very difficult as it requires a lot of luck though. His short range means that you will be able to poke him with your Q so try to make sure that you avoid poke and then go in to hit a Q only, with you backing out after. A E->AA->Q combo is devastating for him so try that to win a trade. If he goes into Mega Gnar, you can better punish his mispositioning, as he can't really escape too well. You want to be looking for all ins when he is in Mega Gnar but do NOT underestimate him. If you are both low HP, he will win because MegaGnar has enough stuns and etc. to keep you locked in place for long enough for him to kill you. If you use your Ultimate properly, you will kill him fairly easily though. Just make sure to ult him when he is in Mini-Gnar, as Mega Gnar can just stun you against the walls of your own ultimate and in general, is better at wasting time.”