Question

Can I catch Giratina after I defeat him in turnback cave?

Comments

i believe he is gone for good.

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i may be wrong, GAME FREAK probably made it like all the other legendaries and made you chalenge the E4 again

Answer 1

No. Once you faint him/her/it, it is gone for good. :(

Answer 2

No, he is Gone for good :(
Sorry you can still get it by trading however...