where can i find red fangs so i can get twin lance.
i need to know in which direction and what the shape of the island is

and does oden have a weakness i cant seem to beat him with gfs cuz they only do 1000 each hit and there at level 100

I forgot about the red fangs, but my safest and closest guess would be the ruby dragons for some reasons.
As for Odin, just attack don't summons GF's and Junction something to strenght and make the party deal heavy damage. Keep on attacking, he won't do you much unless the time limit is up, then he zantetsukens you and your dead. Except from that he has no attack, so it shouldn't be too hard. Cast meltdown, Aura and haste if you have it too really make the things easy ;)

I know you can steal Red Fangs from either a Hexadragon or Chimera. You can also Card Mod 3 Hexadragon cards to obtain 1 Red Fang.

As for the exact location of the item, can't say I know that, sorry.

You can find Red Fangs from Chimeras and Hexadragons on the Island closest to Heaven and the Island closest to Hell. The Island closest to Heaven is on the right hand side of the map. Kinda in between the middle and the top corner of the right hand side. The island itself is shaped like a long circle and is in a group of islands. Keep on landing on different islands and you will eventually run into it. As for the island closest to hell, it's the the island farthest to the left. It's shaped kinds like a horn, along with a chain of islands.

If you are not sure which island you are on, you can go to your menu and on the bottom left, it will tell you what the name of the island is.

I hope I helped!

~Alchemy