Pinsir

Type Tier
Bug UU
Statistics
Stat
HP
65
333
Atk
125
348
Def
100
298
SpA
55
208
SpD
70
238
Spe
85
268
Name Item

Swords Dancing Pinsir

Leftovers
Moveset
~ Swords Dance
~ Body Slam
~ Submission
~ Hidden Power Bug

Try to bring Pinsir in on something that's Sleeping because Pinsir is rather fragile. After a Swords Dance, this set will hurt any Pokémon that's not named Skarmory.

Name Item

Sleep Talking Pinsir

Leftovers
Moveset
~ Rest
~ Sleep Talk
~ Swords Dance
~ Body Slam / Hidden Power Bug

This is good for teams that don't seem to have a dominant attacker (Toxic stall teams, for instance).

Other Options

You can use Hidden Power Rock, Return, or Substitute as a filler move. If OHKO moves are allowed, Guillotine is an option.

Opinion

Nintendo hates Pinsir, sadly. I don't know why, but they must for shafting his GSC potential the way they did. Nevertheless, in the hands of the elite, Pinsir is one awesome sweeper, in contention for the best underused sweeper for sure. The physical attacks he learns covers most of the common Pokémon, and he's decently fast in GSC terms. If you can get rid of Ghosts and Flying-types, use him. He's also one of the coolest Pokémon for sure.

Counters

Skarmory is the best Pinsir counter in the game obviously, Gengar and Misdreavus resist this guy's moves. Nidoking/Nidoqueen, Zapdos, Moltres, Articuno, Charizard, Aerodactyl, Muk all resist something or other as well. Steelix can work against the Rest Talker.