Hi,
My name is IisCollins and I'm a Silver 3 Top/Jungle main. I recently started playing Ekko in the jungle as somewhat of a cheese strategy, but it is actually quite strong even though rito nerfed Tank Ekko. Ruinglave and Rylai's give Ekko a surprised amount of burst damage while still being utility in providing tankiness and slows. Ekko can still be built as more of a bruiser jungler, but I believe the more bursty and outplay type of Ekko excels in the jungle role. The time to play Ekko is a little bit like when you should play Elise or Diana. As sort of an AP bruiser/pick champ. Ekko is also very proficient at stealing Dragon and Baron if timed right, e over the wall, smite, and ult away to safety.

Pros:

Good burst
Good ganks
Good sticking power
Huge outplay potential
Can jump most walls in the jg
Mildly tanky
Amazing ult
Good at stealing dragon/baron

Cons:

Weak to early invades
No built in sustain
Lvl 6 doesn't help ganks
Weak to cc (Build tenacity)

Quints

2x Movespeed
1x Flat AP

Reds

8x Attackspeed
1x RNG crit chance (or attack speed)

Yellows

9x Flat armor

Blues

9x Flat AP

I prefer to max my E before my Q mostly because it synergizes with ruinglave better and it helps with overall mobility and engage/disengage. W last and R at 6/11/16.

In order to jungle Ekko, start with your W; why start W you ask. Well, because of the passive and the huge stun it gives you. The shield fades away as the stun does so it doesn't really help that much, but the stun and passive magic damage on aa helps a whole lot. Get q next as it does more damage then E and has a shorter cooldown, and lastly e to help with ganks. Max E first, then Q, then W, and R whenever possible.