So when you are in the jungle, you are a single target ap/ad marksman.Until you go to mega gnar. So I prefer starting off with krugs, smite it. Then I go to rays and kill the tiny ones first. If you are low get scuttle, or if that is taken, get red. You have to smite the red to be alive. Then you back. After That you clear top, give blue to your mid laner or whoever wants it, and then do what you want.

Hybrid Gnar is squishy when not in mega gnar. So in teamfights you want to go in and Mega Gnar then come out when you are in normal gnar so no one can kite you. When ganking, go mega gnar, ult, stun, and then do damage.