Gnar has a kit that has a lot of potential in the jungle. He has plenty of cc for ganks, especially if you can time his rage right, as well as a decent clear time for jungle camps. He has a relatively strong early game, is a little weak in the mid game, and absolutely dominates the late game!

Lets face it, Gnar in his mini form is very squishy early. And the blue buff (Which i recommend starting) can hurt quite a bit. So, to keep from having to chug all your health pots at once, learn to kite the buffs. This is a strategy that works against Blue buff, Red buff, and the Golems. You simply attack the camp at a normal range, then work your way back to where i am standing in the pictures below. Then the monster wont know whether to back off or attack you, and you will be able to attack them without taking any damage! You will want to be farming your jungle as often as possible in mini gnar form, and ganking whenever you are in mega gnar form.