Togepi is one of the adorable Pokemon loved by fans all over the world. Togepi returns in Pokémon Brilliant Diamond and Brilliant Pearl. There are two ways to get Togepi while playing, one of which requires you to complete the Pokedex first. Here's how to find Togepi.
The first method you can use to find Togepi requires you to see all the Sinnoh Pokemon the game has to offer. Once done, go to the Friends Park and you will find Professor Oak. He will give you the PokeRadar item. After acquiring the PokeRadar, go to Route 230. While using the item, there is a 12% chance of Togepi appearing.
The second method you can use requires you to reach Eevopolis. As part of the story here, you will meet the underground man. He will grant you access to the Grand Underground using the explorer kit. From here, head to Jubilife City, Hearthome City, or Pastoria City and go underground. Now you will need to search the Great Dungeon for the Source Cavern, the Dazzling Cavern or the Stargleam Cavern.
Each of these positions offers a small percentage of the chance that Togepi will spawn. If the Pokemon doesn't spawn when you enter one of these areas, exit and re-enter. Rinse and repeat until you find Togepi.