Where is the Comet accessory in Diamond?

Question

I've been looking around, and I can't find any site that tells my how to get the Comet. Is it available normally in game, or do you have to use a AR code?

Answer 1

It is not available normally in game. You have to use AR.

Source: Bulbapedia and game faqs. (Sorry, can't do links right now. )

Hope I helped!