Ok, so somebody has to fight you, it has to happen, lets just see who the common matchups are and how you can destroy them.
MOST OF THESE WILL CHA
She is squish, any time she is out of her stealth field she is in danger.
You either first blood him with help from your jungler and get an early gank on him, or bully him from farming BEFORE he gets tanky or he will be unkillable. He gets really tanky, and unless cho gath gets behind, the only thing you can do is afk farm or you will be wasting your time.
Shes bad.. so bad..
He can poke at you all day, run away from you and kite you, and be annoying to fight against early game. Hes gonna be farming most of the time with his parley, but when its on CD, hes gonna have to walk up to a minion to kill it. If he does that, pull him in and use your combo. He is gonna have to drop everything he has to get away. There is a sweet spot with GP where at level 4-5 he wont have his ultimate and you will have 2-3 points in Frenzy. Try and bait his ultimate, but make sure not to fight in it. Usually easy fight.
Honestly I don't know what to say about garen, he really isn't used very much, but I do know that he can probably out damage you in a 1v1, so try to farm as much as possible without taking damage. If he spins toward you, use your q to get him to take tower hits.
Seems pretty easy to be honest, I dont think he can 1v1 you efficiently enough, and he really isnt used top lane very often compared to his jungling. New Season 3 he is rarely ever used top but he is still squishy.
When he jumps on you, use your E and slow him down. Than get a couple of auto attacks in before Qing him. Your frenzy will be up soon so you can use that asap. If he stands and fights you, and you think you can win, pop your ignite and ult, and if he flashes away just flash/ghost towards him and flip him before he jumps away. Most of the time though, jax will be stronger than you. Ganks are pretty easy on jax if your jungler has exhaust. Ganks are best against jax pre level 6.
A well played Kayle can do very well vs volibear all game. early game she will poke you as hard as she can. Dont let her do a ton of damage. Its ok to miss cs and not get chunked by half. ask for early jungle help pre 6 so she doesnt get ULT. She doesnt have a natural getaway except for her speedup so you should be able to pick up the kill. Kayle is another rare occassion that isnt used very often, but is coming back.
A good Lee Sin (which these are based off of assuming the enemy is moderate or good) will win vs you in lane most of the time. If you Q him he will just W away or shield himself and fight you, there is really never a time when volibear has the edge, but its not a hopeless fight. Comes down to who plays the matchup better and who gets more help from jungle.
Very recently a popular champion, due to all the success in recent tourneys, and vs volibear both get really tanky. Mainly a farm fest, although pre-6 he has no natural getaway so you could possibly kill him if you use armor pen runes.
All nasus is good for is farm. Once he gets fed, there is no stopping him. If they have picked nasus, do yourself a favor, and dont play volibear, just pick teemo and win the lane all day. Volibear can do fine against nasus, but if you are getting ganked, he will slow you down as you try to Q out of there, and you will most likely die everytime. My best advice if you have to play vs him is to ask your jungler for a quick top lane gank so he gets behind later. Every time he walks up to a minion to farm, pull him in and combo him. Oh, and never play nasus.
I still don't feel comfortable vsing a nidalee. She will poke you level 1-6 and once she has her ult she can just pounce away from you if you try to charge her. Definitely try to get ganks in pre-6. Start out with boots first, even though her spears won't be doing that much damage to you. Once you have ninja tabi the AA will feel like tickles and if you have ninja tabi before she is 6 you can pretty much guarenteed get a kill.
So, goatman is a pretty good top lane. Technically on paper he gets "countered" by voilbear due to the one thing true damage cannot do well against - a fuck ton of health. However, you dont have that much health until you build your Warmogs and FM, so early to mid game olaf has a very real chance of killing you, so if you see and hear that olaf gets countered by volibear, its not true, its a dumb perception based in numbers that do not matter as much as you might think. An olaf can max his Q or E and still do a LOT of damage to you.
Don't see alot of Pantheons now days, but his spear is the only range he has and it does no damage on volibear. If he jumps on you and he is alone, combo him, and he will feel really stupid. Even with the changes to Season 3, pantheon stands no chance.
Sometimes you will see ryze top because people think he should be top. He shouldn't be top vs you. Although his W will be really annoying if you try to charge in, he will just lock you in place. Theres no real challenge here, he will get stomped.
A very mediocre matchup. I dont think shen will try to harass you because you will regen anything he throws at you. At the same time, if you try to charge him, he will dash away, and any trades he will shield himself. Later on, he will get tankier than you, and become unkillable if fed in 1v1s.
She will probably lose most trades, if you fling her she will just use her AoE and E you and twin bite combo and back up, but you do tons of damage.
This guy is an asshole. He really is. He will make everything about love and life impossible for you. Essentially blind you when you go to cs, and he will poke and harass you when you walk up to hit creeps. Do yourself a favor, and if teemo is picked before you, do NOT pick volibear. It isn't even worth the frustration.
Only trade when he attacks you Post Level 6. Before he gets his ult though, you might want to initiate on him before he gets ridonkulous crits and lifesteal.
Bearception. Just flip each other at the same time and laugh about it over a nice cold drink.
Rumble is a popular pick now days and he likes to pick his opponents down slowly. This is good if you play volibear, because of your insane regen. Also, tell your jungler to camp top if he wants free kills. Just toss and combo rumble, and he probably wont get away alive. Volibear does very well in this matchup if played aggressively.
I would trade with her up until level 6, where she can essentially burst you down completely. Just trade with her and try to damage her enough to make her recall back.
Fizz basically counters what we try to strive with in this build, and that is good sustain, great regen, and maximum farm. DO NOT even attempt to kill him if you are below 40% health, unless he has less than 100 or so health. (this isnt a lane matchup, just fyi)
He sort of reminds me of Volibear to be honest because he isn't a very popular champion, although very good. Just try not to let him dash in on you and harass you.
Obviously you are going to need to build MR, but he has good sustain like you do. You can outduel vlad most of the time. Expect him to poke you, and defend his harass until level 4 where you can kill vlad no problem.
The whole idea of this guide is to survive early laning with your sustain and to be a big burly monster tank later on. Irelias sustain cant compare to volibear, and you can 1v1 irelia pretty much the entire game. A very good counter to her.
Darius is just really good at what he does, his passive kinda shits on your passive, add to the fact that once he gets you low enough to proc your passive, he will most likely follow it up with an ignite, slowly down your regen to almost nothing, and dunking you with ult. Not a good matchup.
Although alot of people do not play her very well, she has potential to be good at top, but as it stands she is really squishy and not even close to beating volibear 1 on 1 without jungle help.