After days of walking as buddy, I finally encountered another Grimer.
I evolved my old Grimer with a good IV, it got Infestaion/DP! The worst moveset for attack.
So my question is: is it a viable defender and worth powering up? Most people won't send fairies attacking into Muk, unless they have Zen Headbutt, they will send Rhydon or Alakazam. In the Rhydon case, PJ does 1.250.64=80% of total damage, while Infestaion being 100% damage. In the Alakazam case, PJ does 1.250.8=100% of total damage, while Infestaion being 100%, too.
Dark Pulse is a move with 2 bars without STAB, it does 125% damage to Alakazam and does 25% more damage to Rhydon compared to Gunk Shot.
Though, it would be placed near the bottom of the gym, but not the bottom in my local gyms.
Answers
Muk is cool, so go ahead. It's not a weak defender, although it's not particularily strong either.
Just a small correction: PJ vs. Alakazam does 1.25 * 1, as poison is neutral against psychic. Infestation does 1 * 1.25. So you're correct in that they do the same %, but instead of doing 100% as you say, they in fact do 125% as PJ has unresisted STAB while Infestation is SE without STAB.
