Dragonite first appeared as a Dratini in Like Grandfather, Like Grandson! where he was sent out to battle Lewis' Aipom. After a hard-fought battle, Dratini ended up being defeated by Aipom, beginning Lewis and Benga's rivalry.
He appeared again in Insult to Injury!, where he witnessed the battle between Sawk and Aipom.
He appeared once again in Rival Resort!, where he was revealed to have evolved into Dragonair. He battled against Lewis' Swadloon and defeated it with Dragon Tail. Dragonair then fought against Lewis' Aipom and lost once again.
In Benga's Last Stand!, he was revealed to have evolved into Dragonite. He participated in the Unova League battle between Lewis and Benga. For the third time, Dragonite faced off against Lewis' Aipom and this time was able to defeat the Long Tail Pokémon. He then battled against Lewis' Dewott and nearly overpowered him with Hyper Beam. However, Dewott suddenly learnt Hydro Pump and was able to push back Hyper Beam and follow up with a super-effective Ice Beam, defeating Dragonite and allowing Lewis to advance to the next round.
Dragonite was shown to have a personality similar to Benga; that being very eager to battle. However, he is shown to take losing graciously. In Benga's Last Stand!, Dragonite relished the opportunity to battle Aipom again and was overjoyed when he finally defeated his rival.