Nidoking will not evolve any further.
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Nidorino evolves into Nidoking using a moon stone
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Nidorino Does Not Evolve By Leveling Up,You Need To Give It A Moon Stone To Evolve Into NIDOKING HOPE I HELPED
The only way to evolve Nidorina to Nidoqueen or Nidorino to Nidoking is using a Moon Stone on either of them, which you can find throughout the game. Good luck! ~Katie
No, you need to have your Nidorino learn it at level 53. that's why i saved my moonstone until level 53 and then made him a NidoKing.
Nidoking doesn't learn Horn Drill by level. Its previous evolution, Nidorino, does, which learns it at level 46. You'll have to level up a Nidorino until it learns Horn Drill, then evolve it to Nidoking.
Nidoran female and male, evolve at lv !*, ther to evolve it to Nidoqueen or Nidoking, respectivly, get a Moon Stone! Sory,meant Lv 18 ------------------------------------------------------------- Your right about moon stone, but its lvl 16 that nidoran female and male evolve<< Signed Megadeth987