A Visitor is a role that may visit a player each night. This action can be viewed by any Follower variant among other roles, but the action itself will have no effect upon its target.
Visitor was originally called False Positive, a role that was under the impression that they were doing something but in fact were doing nothing besides performing an action.
Use & Power
Visitor is a nominally-useless role. It does nothing, but by existing, it has power as a Named Townie. The Visitor is a step up from this: as it has an action, it can confirmed to be doing something by roles that can see actions happen, like any kind of Follower variant role.
There is little that can differentiate a Visitor from a Vanilla Townie, however by not being a VT it can itself be considered a kind of power. If a massclaim can be beneficial to the town, consider insisting going after a player you view as scummy, as the town may end up with too many power role claims, making decisions derived Setup Speculation and Process of Elimination easier.
A scum-aligned Visitor is normally best served by deciding on a falseclaim in advance, and then using their Visitor action to replicate the actions that they're later planning to claim having taken. For example, if you're planning to claim "Town Tracker who investigated mith night 1", you should target mith with your night action on night 1 in order to make the falseclaim harder to disprove.
Sample Role PM
Welcome, [Player]! You are a Town Visitor.
- Visit: Each night phase, you may visit a player in the game, but this will have no effect beyond visiting that player.
- You win if all threats to the town are eliminated and at least one town-aligned player is alive.
A Named Townie is a role that serves no purpose beyond having a unique name.
A Fruit Vendor is a role that can give a player a piece of fruit each night.