Getting GF Odin

This GF is found in a sort of tower on the Centra continent.  Enter the structure, and a 20 minute timer will start to count down.  Make sure you have Enc-None equipped (GF Diablos learns this ability after Enc-Half is learnt).

Enter the ruins and walk all the way up the stairs.  You'll eventually reach a statue.  Take the eye from this statue.  Now, keep going up to the top and there will be another statue.  Put the eye from the lower statue into this statue.  A number will now appear.  Remember this number.  Take the eyes out of the statue and go back down to the first statue.  Put both eyes in and input the number you were shown before.  You will now have to fight Odin.  You should have at least ten minutes left.  Do not use Guardian Forces, because it will just waste time.  Use Triple high powered magic spells like Thundaga, and use your Limit Breaks, and some Ultimas and Meteors if you have some.  Cast Haste on all your party to get an advantage, and save from wasting time.
Once you win the battle, you will have gained GF Odin.  However this GF does not work like a usual GF.  It is a hidden GF and will appear at random at the beginning of some battles.

For more Guardian Forces, click here.