Peasant is a non-standard class for those who don't have garb or equipment to play another class.
From the Rulebook
Players without class sashes or minimum garb must play Peasant.
|Amtgard Character Classes|
|Core Classes: Anti-Paladin · Archer · Assassin · Barbarian · Bard · Druid · Healer · Monk · Paladin · Scout · Warrior · Wizard|