Fiddlesticks

Every jungler's nightmare, his fear status is annoying combined with his spell vamp. Attack him when you have alot of hp and when he has wasted his moves to cooldown.

Warwick

You out range him, burnout your machine with flame spitter and keep on punching him. Ult him when he tries to escape or if he is more fed than you ult him before you engage 1v1. Use W when he comes close so you can endure his ultimate. Then counter him back with your ultimate by casting it in your area and flame n harpoon him to death.

Amumu

Early and mid game you out trade him in damage. 1v1 he is easy to take down, however in 1v2 him or his team mate can beat you so make sure to ult your position or bait him into a bush and ult the bush and go all out on your moves.

Nasus

Easy to take down nasus jungler in early game, knock on his door and introduce him to mister flame and madame harpoons. harass him often in the jungle to prevent him from farming and try to catch him nearly done with camps so you can get easy kills and steal his buffs.

Wukong

Little tricky to handle if wukong is in the hands of a pro, spin around with flame spitter when he uses his clones, he may have your jungle warded, may hide in bushes or around corners waiting for the chance to dive at you and ult you. other than his tricky manuvers you can easily beat him in 1v1 fights.

Rengar

Ward your jungle from time to time and watch out for "!" indicating he is nearby and most likely will strike you, if you sense him nearby, stop what your doing and get ready to fight him or counter him when he ganks a lane near you.

Shaco

Annoying to pursue without map awareness and he can suprise you at the worst of times. If he has a buff, then focus on the shaco with that buff, ignore his clone. Try to force him out of your jungle or away from fights rather than waste your time trying to kill him.

Nocturne

Malphite

He is only a threat if someone assists him, you can destroy his armour passive without a problem and he goes down pretty fast.

Kha'Zix

Zhonya recomended to kill him, ask for assistance to kill him since he can out trade rumble easily alone. You can easily engage him in 1v1 if he has low hp.

Jax

He cannot dodge any of your moves only your auto attacks, he is very weak to rumble in general. 0 threat.

Udyr

He out sustains rumble in 1v1, he can keep on constantly pestering rumble with his bear stance.

Volibear

Aslong as you don't have low hp you will have no problem with volibear go all in with your moves, flame and harpoon him if he dares to run towards you.

Jarvan IV

Jarvan the 4th can knock up rumble pursue him and trap Rumble in his ultimate. Run away if he has a team mate nearby, best engage in 1v1. when he ults you, you ult him back then use zhonya to make him wish he didn't ult you.

Xin Zhao

Unless the Xin player is having a bad day jungling you want to avoid fighting him untill your ready. He can keep on knocking up and chasing rumble and out sustain him to.