Employed to take a message from one point to another, some will take a single message for a single payment, others will organise a regular route to take many messages at once.
It is a dangerous job, and so messengers are often quite adept fighters, while the average message means nothing to bandits or wandering creatures, messages from royalty or military often contain vital and important information.
While players are generally free to select a citizen role as a background, they should check with the Dungeon Master to make sure it fits within the local area, other party members and does not conflict with the intended adventure.
Citizens have proficiencies in weapons and armour relative to their type and region, so it is not included in the above information, and players do not gain any proficiencies from choosing a citizen background.