You cannot evolve Gligar in Pokemon Ruby, Sapphire, or Emerald. It is unavailable. Only works on the newer games.
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It doesn't evolve on emerald. it only evolves on diamond and pearl because gliscor is a new Pokemon
train gligar at night with razor fang then he will evolve into gliscor!
No. Gligar's evolution Gliscor makes It's first appearance in Generation IV
Give Gligar a Razor Claw and level it up at night.
Gligar evolves into Gliscor when you give it a razor fang and level it up at night.