Cynthia's Garchomp first appeared in Top-Down Training where she was seen battling Lucian's Bronzong. Even though Bronzong was shown to be a powerful Pokémon in the battle against Dawn's Buizel in An Elite Meet and Greet!, the Bronze Bell Pokémon lost to Garchomp.
In the same episode, she battled against Paul. She showed amazing strength by taking down four of Paul's Pokémon without sustaining too much damage, even taking out Paul's Torterra easily.
Garchomp is Cynthia's strongest Pokémon and her main battler. Garchomp is well trained enough that she can battle even without her Trainer giving her commands. She battled Cyrus and his Pokémon in the Celestic Ruins but he managed to outsmart her and use her moves against her for his own gain. She was later used against him in the Galactic HQ holding where she fought his Gyarados, despite using her strongest moves, her inexperience with her newest move, Draco Meteor, caused it to be weaker than it should have been and thus was unable to defeat him. After Cyrus escaped, she took Diamond, Pearl, and Platinum to the Spear Pillar for the final battle against Team Galactic.
A † shows that the move was used recently, unless all moves fit this case or there are fewer than five known moves.
Pokémon Diamond and Pearl Adventure!
Garchomp in Pokémon Diamond and Pearl Adventure!
Garchomp has appeared in DP Adventure as her main Pokémon. She sent it out to show off its power to Hareta back in Dialga's Secret Keys!. Garchomp reappeared in A New Battle Begins where it faced off against Mitsumi's Infernape. It fought using Giga Impact while Infernape was using Overheat. It is unknown who won though.
Although Garchomp has never been shown losing to a single opponent, in Aiding the Enemy! (Japanese version only), the commentator on TV mentioned that Cynthia was using her last Pokémon to defeat Template:E4, meaning Garchomp might have lost during that battle.
Garchomp drops a level between her rematch in Platinum and her battle in Black and White, suggesting that subsequent challenges of the Elite Four are not canon.
In the games, Iris thinks that Cynthia's Garchomp is cute.
Related articles
For more information on this Pokémon's species, see Garchomp.