Titles are rewards for specific accomplishments in-game, obtained by completing stories and battles, defeating enemies, collecting items, or participating in events.
A title can be equipped and shown above a character's name, visible to all other players.
Titles often provide bonuses to stats related to the requirements.
When a title is obtained, the stats received from it are permanently added to the character. Thus, which title is displayed at a given time does not affect the character's attributes (i.e. A player can display the Beginner Spirit Investigator title and still receive the +1 STR from the Neck Grabber title.)
For all equipment set titles that are not part of the main storyline, you must purchase the story for them at the general store.