This is a direct, somewhat silly, opposite question to What is the highest possible AC? .
I’m wondering what is the lowest possible Armor Class a Player Character can get at any point in time, “helped” by any official relevant monstrous feature, magic item, spell, etc.
So far, the lowest I’ve obtained is a 0, provided that the player character is a (Monk or Barbarian) with both Dexterity and (Constitution or Wisdom) rolled as a 3 (-4) without any racial bonuses to said stats and that said character is affected by a Slow spell.
Can you go even lower than that ?