Mambo Loa is a Sim in The Urbz: Sims in the City for handheld and The Sims 2 for PSP. She is a psychic and knows quite a lot about paranormal activities.
Mambo Loa first appears when Sim Quarter is unlocked. She tells the player's Urb that she saw a vision of Daddy Bigbucks' plans to buy the Riverboat from Olde Salty. She then helps the player's Urb disguise themselves as Olde Salty's brother Pepper Pete to try and convince Olde Salty not to sell the riverboat.
The plan turns out successful, but Daddy Bigbucks immediately throws the player's Urb into the river after he finds out that they were responsible. Mambo later appears when Bayou Boo is turned into a vampire. The player's Urb asks her for a cure for vampirism, which she states is a helping of chocolate. She can be found in the Fortune Teller's Shop most of the time.
Mambo Loa is found on the Service Station in her little store, Curio Shoppe. After talking to Oscar Del Fuego in his garage, where the game begins, he will send the player's Sim to talk to Mambo Loa. Once met, Mambo Loa will offer to give the Sim the 'reading', which is a personality test based on which aspiration and personality will be chosen.
She will also teach the player how to fulfill wants, take care of their Sim's needs, etc. She is an important part of the game in the beginning. Later on, the player will need to return to her to purchase items for at least two quests later on. The player can always return to Curio Shoppe even if not needed for a mission, though, to purchase food and other items, or to speak to Mambo Loa or Bella Goth, which are both in the store. Mambo Loa is interested in secrets about Magic, the Supernatural, and Deputy Duncan's Intimate Secret.