Pinsir in depth
A stag beetle that also has hands
The animal is obvious: a stag beetle, the beetle whose enlarged mandibles look like antlers. What the 1996 design did was move those mandibles to the top of the head, turn them into two spiked horns and leave the rest of the body in a bipedal stance, with functional arms and hands. That’s why the Pokédex classifies it as having a humanoid form rather than an insect form, something it shares with only a handful of species in the Kanto Pokédex.
The English name is literal, pincers. The Japanese name is カイロス, romanised as Kailios, and it doesn’t play on any ordinary word in the language, which is unusual among first-generation names, since they almost always hide a joke.
The detail that best completes the design comes at level 48: it learns Guillotine, a one-hit knockout move that misses most of the time but, when it connects, knocks the opponent out in one hit. It’s exactly what the entries say it does with its pincers.
The other half of the trade
In the first generation, it couldn’t be obtained on routes. It appeared in the Safari Zone in Pokémon Blue, while Pokémon Red put Scyther there instead, and there was no way to have both without trading with someone who had bought the other version. The Safari Zone also takes away the usual tools: you can’t attack or weaken the target, only throw bait or rocks and hope it doesn’t run away. A catch rate of 45 under those conditions is what turned the two beetles into schoolyard trading currency.
The rivalry has remained part of the script. Heracross competes with it for tree sap in almost every region, and the Alolan Pokédex replaces that conflict with another one: there, its declared enemy is Vikavolt. All three fill the same niche — the region’s large physical Bug-type — with different solutions: Heracross adds Fighting, Vikavolt adds Electric, and this one adds nothing.
When it grows wings
Mega Evolution, introduced in the sixth generation with Pinsirite, is what changed the conversation. Mega Pinsir opens its elytra and spreads its wings, becomes Bug and Flying, and gains Aerilate: all of its Normal-type moves become Flying-type moves and gain power. All at once, moves that had previously been filler — Strength, Rock Climb — become boosted Flying-type attacks, and Swords Dance stops being a risky setup move and becomes the obvious first turn.
The trade-off is harsh. Bug and Flying quadruples Rock-type damage, and Stealth Rock — which Pinsir itself learns from a TM — removes half its HP every time it enters the field. Any Rock- or Electric-type priority move ends things before Swords Dance can do anything.
It’s worth remembering where none of this exists. The reference game for this entry is Pokémon Brilliant Diamond and Pokémon Shining Pearl, where there’s no Mega Evolution of any kind: there, Pinsir is a pure Bug type with 125 Attack, 85 Speed and no tricks.