From Serenes Forest
Class Options
Your Avatar always begins as a Nohr Prince/Princess, but they can use a Parallel Seal to change to a secondary class as determined by the Nature you chose for them.
Available classes: Cavalier, Knight, Fighter, Mercenary, Outlaw, Samurai, Oni Savage, Lance Fighter, Spellcaster, Priest (male), Priestess (female), Pegasus Warrior, Bowman, Wyvern Rider, Ninja, Dark Mage, Rod Knight, Herb Merchant and the corresponding promoted classes, when at the required Level.
In addition, your Avatar can use a Marriage Seal to change to their husband or wife’s base class or a Buddy Seal to change to the base class of any character they’ve reached an “A” support level with.