In a medium bowl, combine the Greek yogurt, Kewpie mayonnaise, lemon juice, water, olive oil, grated garlic, onion powder, dried parsley, paprika, salt, and black pepper. Whisk until creamy and smooth. Cover and chill until ready to use.
1 cup greek yogurt, ½ cup kewpie mayonnaise, 2 tablespoon lemon juice, ¼ cup water, 1 teaspoon olive oil, 2 small garlic cloves, 1 teaspoon onion powder, 1 teaspoon garlic powder, ½ teaspoon dried parsley, ½ teaspoon salt or salt to taste, ⅕ teaspoon black pepper, ¼ teaspoon paprika