From Bulbapedia, the community-driven Pokémon encyclopedia.

Earl Dervish (Japanese: ジョバンニ Giovanni) is the teacher of the Pokémon Academy in Violet City or White City, depending on if a player is playing Pokémon Gold, Silver, and Crystal, or playing Pokémon Stadium 2.

Earl is notable for changing the order of the words in his sentences, somewhat like Yoda from Star Wars, although his grammar is generally incorrect. For example, when asking a potential student if they want to learn from him, he will ask, "What you want to know? Want to be a winner is you?" This may be a reference to Engrish.

In the anime

In A Bout with Sprout, the characters visited Earl's Pokémon Academy, where he made several brief appearences as comic relief, wearing a tutu and constantly twiling around.

Trivia

• An interesting point is that Earl's Japanese name is Giovanni, which is also the English name of the Team Rocket boss in the Generation I and III games, and Giovanni was absent for the Generation II games.