Sierra Guevara is one of the pre-made NPC burglars who resides in Desiderata Valley, the neighborhood shipped with The Sims 2: FreeTime. The other two burglars are Geoffrey Barthelet and Allyn Smith. She can be made playable by befriending and asking her to move in, or by marrying her. Sierra has short blonde hair, grey eyes and medium skin. She is a Knowledge Sim with the Sagittarius zodiac sign.
As far as personality, Sierra is extremely neat, and very active. But she is very shy, and somewhat serious and grouchy. When it comes to Sierra's skill points, she has 1 skill point in charisma, and 2 in creativity, but she doesn't have any other skills. She is mostly interested in Weather and Travel. Sierra has the same facial structure as Sadie Bruenig. Her pre-destined hobby is Cuisine.