On Pokemon platinum how do you get a Galade?

To get a Gallade in Pokémon Platinum, you will need to evolve a male Kirlia into a Gallade. Here's how you can do it:

1. Obtain a Ralts: You can find Ralts in the following locations in Pokémon Platinum:

- Route 203

- Eterna Forest

2. Evolve Ralts into Kirlia: Ralts evolves into Kirlia when it reaches Level 20.

3. Learn the Move "Stone Edge": In order for Kirlia to evolve into Gallade, it must know the move "Stone Edge." Kirlia can learn Stone Edge by leveling up (Level 47) or by using a TM (TM46).

4. Use the Dawn Stone: Once Kirlia knows the move "Stone Edge" and is a male, you can use a Dawn Stone to evolve it into Gallade. Dawn Stones can be found in the following locations in Pokémon Platinum:

- Underground

- Battle Tower (Prize)

- Pokémon Mansion (Hidden)

5. Evolve Kirlia into Gallade: After using the Dawn Stone, the male Kirlia will evolve into Gallade.

Remember, Gallade is a Generation IV Pokémon, so you can only obtain it in Pokémon Platinum and not in earlier versions of the Pokémon games.