Biography
A biography, often shortened to bio, is a written story or history about a particular Sim, family or household. Sim biographies appear in The Sims, The Sims 2, and The Sims 3, and family and household biographies appear in The Sims 2 and The Sims 3. Sim biographies can be set and edited in Create a Sim or in-game.
In The Sims, a Sim's bio
Many pre-made Sims, households and families have written biographies. These biographies allow players to piece together a storyline for that particular Sim or household. These storylines are often intertwined with other Sims and families in the neighborhood or world, creating a broader story for the player to explore.