Ninjask

Like a locust, Ninjask will devour all of your resources if you let it, in particular your Stardust. So don't let it.

Best PvE Offensive Moveset

• Fury Cutter and Bug Buzz makes for the only worthwhile offensive movest for Ninjask

Best PvE Defensive Moveset

• Metal Claw pairs very well with any of Ninjask's Charged Moves, though Aerial Ace is the stand-out due to how quickly it comes out.
• Fury Cutter is bad on defense. Its claim to fame is how quickly you can use it on offense, but on defense it comes out at set intervals, making it very sub-par.

Fury Cutter is the preferred fast move, benefiting from STAB in addition to generating energy very quickly. Metal Claw is underwhelming. 

Aerial Ace is a poor move despite having STAB, but can be very useful to bait shields due to its lower energy cost. Shadow Ball is able to hit most opponents for neutral damage and is handy when Ninjask is stuck in an unfavorable matchup. Bug Buzz takes advantage of STAB to deal large amounts of damage, but doesn't offer any significant coverage against Ninajask's 5 weaknesses.