Question

I just want to know.....

Answer 1

Of Course! I Didnt Use Giratina in my Platinum! I Beat it:)
It Is Easier with Ho-oh, but beatable without:) Hope This helps!:)

Answer 2

Yes, it's not a problem, at least you see it to complete the Pokedex!

Answer 3

Yes but you must at least encounter him and defeat him

though I would suggest catching him he is a very

powerful pokemon with a move that has a 50% chance

of burning sacred fire.

Answer 4

Yes I restarted my game but I passed it without ho oh and now I have it it isnt very good though