Alexander Goth

Alexander is the son of Bella Goth and Mortimer Goth. He has pale skin and Harry Potter like glasses, and somewhat resembles Klaus Baudelaire, from Lemony Snicket's A Series of Unfortunate Events book series. Unlike the rest of his family, Alexander did not exist in The Sims and is a new addition to The Sims 2. He seems to share his father's intelligence despite his young age and is enrolled in private school. Due to the apparent age gap between both of his parents, it is believed that he was born while Mortimer had just turned into an elder, that made a big age difference between him and his sister.

The Sims
Alexander is not present in the sims 1 as he is not born yet.

The Sims 2
Alexander is a young child in sims 2 and seems to be very clever. he will grow up very soon after a few days playing the Goth lot.

The Sims 3
Alexander does not appear in The Sims 3, because his parents, Mortimer Goth and Bella Bachelor, are children. The player can make them have a son and name him Alexander, but there are many other ways for their story to turn out.

Side note: There is a book in the Bachelor home, Alex's family, entiled Murder in Pleasantview. It is written by Alexander Goth, although it is highly unlikely it is the same Alexander.