Iron Cow
Ironcow is a secondary gamemode where players have limited Marketplace access, unable to do anything except buy Cowbell Bags. Iron Cow characters can join Group Combat parties with other Iron Cows and Legacy Cows, have their own leaderboards, and do not have access to the Marketplace chat channel. They are represented in chat with a [IC] to the right of their username.
Up to three Iron Cow characters are allowed per account, although you are not required to create one.
Legacy Cows
Legacy Cows are identical to Iron Cows in terms of gameplay, but are represented with a [LC] to the right of their username and have their own leaderboards. Legacy Cows are players who restricted themselves with the same rules as Iron Cows before they were officially supported, and therefore it is impossible to create a Legacy Cow character.