• English / United States: Gary's Nidoking
• Japanese / Japan: シゲルのニドキング
• Japanese (Romanized) / Japan: Shigeru no Nidoking
• Japanese (TL) / Japan: Shigeru's Nidoking

During a Gym Battle in Viridian City, Gary used Nidoking against Giovanni's Golem. Using a single tackle attack, Nidoking was victorious. Giovanni then used Kingler who ordered it to use a crabhammer on Nidoking and causing Gary Oak to switch out. Gary switched back to Nidoking once Giovanni used Mewtwo and along with Arcanine the both attempted to beat Mewtwo. Both Pokémon failed and were easily defeated by Mewtwo. Kanto Pokémon League Round 4 - Grass Field - Vs Melissa. It down to the last Pokémon of both Gary and Melissa to see whom would proceed to the final 16 of the Kanto Pokémon League. Towards the end of the battle Gary's Nidoking faced off against Melissa's Golem and both Pokémon looked tired. Gary ordered his Nidoking to use a Horn Attack, but Golem anticipated the move and managed to grab onto the horn and maintained a firm grip on it. In the final move of the round Golem used Seismic Toss on Nidoking, smashing it into the rock arena. When the dust settled Nidoking had been eliminated and Gary had been knocked out of the tournament