The Matlapin family is a premade family that appears in both The Sims 2 and The Sims 3. They appear as the matriarch family of Dirk Dreamer, the son of Darren and Darleen, who is the playable member of Dreamer family in Pleasantview. In The Sims 2, the Matlapins are not featured as playable family, but instead all of the ancestors are deceased already, including Darleen, who died in a fire accident. Her grave is at the backyard of the Dreamers' home, near a willow tree.
They reappeared in Lucky Palms, a purchasable neighborhood from The Sims 3 Store, in a previous timeline before The Sims 2. There, all members of the Matlapins are still alive and playable. Omar and Mariana are adults, while their daughter Darleen is still at her prime young adulthood.
Matlapin: Means in Swahili "the different" or "difference"".
Omar Matlapin: Means "speaker" in Hebrew.
Mariana Matlapin: Means "of the sea".
Darleen Matlapin: A slang-like term for "Daring" From combination of darling and popular name suffix -leen.