Poor Morobareru. Ignored since everyone looked at his stats and then shoved you out of their minds.
Okay serious time! >:D Morobareru is that mushroom pig pokemon if you didn't know. It has bulky stats (114 HP/70DEF/80SPDEF) and comes with Spore. It can also switch in with ease as it has useful resistances (grass, fighting, water, electric) and a nice 4x resistance to grass. Its my Jaroda counter most of the time as leaf storm hits like paper on it and its bulky enough to survive a boosted HP ice/fire most of the time. Its also counters a few common threats of OU like that ghost Jellyfish pokemon as that thing usually comes with energy ball, and its water attacks are no threat and giga drain guarantees you'll outlast it. Mine in particular also destroys Nattorie because I gave it HP fire. I've been using the lil guy since my first day with PO and it almost never fails me.
The trick to it's success was definitely Regeneration and Spore. Whenever its sent out it always takes a small beating before it can use Spore. That damage is easily recovered with it's ability Regeneration which effectively increases it's health/longetivity by 33% or so making it arguably more bulky then most bulky Pokemon like, oh say Suicune or something (imo).
But bottom line. Try the lil dude out. Hes one my favorite regenerators. All about the spore yo.
And this was my Moro's moveset: Spore/Giga Drain/HP Fire/Substitute (Leftovers) (Regenerate)