From Last Outlaws Online
You will receive Patches, Pins, and even Chatroom icons as you advance in Last Outlaws. They are used to show designation and rank in your MC.
Patches
There are 17 Patches, including several which show club rank, as well as several you can only unlock by earning enough Fame.
List of Patches
Player Patches
Event Patches
Fame Patches
Pins
There are two Pins to indicate your MC has won 1st Place in the Conquest and Domination Events.