How do you get Lyon on Fire Emblem The Sacred Stones?

After you beat the game the first time, you can unlock Lyon by beating the Ruins three times (before beating the game, this gives you the item Nagalfar). If you do not want to go through the motions of beating the game, you may follow the instructions below for getting Lyon with a GameShark:

Enter the following code into the GameShark:

000005C6000A

100CFB200007

8202BE4C444C

8202BE508AFC

After you have entered the code, DO NOT activate it. Simply let it lie dormant.

Next, move a unit that you DO NOT care about to first position in your "Choose Unit" list before beginning a Chapter (This works most conveniently in the Tower of Valni). Take note that this should be done with a worthless unit, because that unit's identity will be destroyed and replaced with Lyon's.

After you have done that, simply activate the code. This will rewrite the data for the original character with the data for Lyon.

Enter battle with the newly created Lyon, and deactivate the GameShark. Battle for a round, then do a soft reset. This will store Lyon's data permanently as that character. However, there are possible repercussions: the Lyon you create will be rather glitchy if it was originally a weapon user instead of a magic user.

Good luck, and ROAR enjoy your Lyon.