Odyssey is Matthew's Up Special Move in Super Smash Bros. Global Apocalypse. After a short lag, Matthew will summon two small swords in the direction the player inputs. The one sword will pierce the other, forming an X, trapping the opponent inside. Then, Matthew will pull out a huge sword and will rush towards the X and pierce it with his large sword, delivering great damage and knockback. The two small sword deal 4% damage each, and the final piercing delivers 12% damage, 20% damage in total, combined with a great knockback. In the Golden Sun series, this attack is known to be one of the most powerful ones.
Game Boy Advance - Golden Sun (2001)