Shadow Weezing

Weezing has always been a defensive Pokemon, taking its high defense stat and adding to it a solid defensive typing. However, Shadow Weezing doesn't really appreciate said defense stat dropping. That said, it looks like it's constantly spewing pollution with the shadow effect, so that's pretty cool.

Best PvE Offensive Moveset

• Acid* offers the highest DPS with STAB, but is a legacy move.

• Infestation fits into Weezing’s role as a Grass-type killer.

• Tackle is inferior in every way.

• Sludge Bomb is preferred for its STAB effectiveness against Grass-types

• Shadow Ball is clearly superior to Dark Pulse; both share the same cooldown and coverage, but the former simply deals higher DPS.

• Thunderbolt can offer coverage in some niche situations, but lacks STAB. 

Best PvE Defensive Moveset

• Infestation is preferred for its ability to hit incoming Psychic-types.

• Acid* is clearly superior to Tackle; both offer wide neutral coverage, but Acid’s defensive DPS is significantly higher.

• Shadow Ball deals higher DPS, but Dark Pulse’s damage window is a whole second earlier, increasing the chances of it actually connecting. Both offer valuable counter coverage against Psychic-types.

• Sludge Bomb is a strong alternative, possessing an early damage window and wide neutral coverage.

• Thunderbolt offers coverage but has a slightly longer damage window than Dark Pulse or Sludge Bomb.