Tycho Curious

The unborn alien baby of Pascal Curious will be born shortly after starting to play the household. Pascal Curious was abducted by aliens before the game started, and he is on his third day of his pregnancy. Unlike Brandi Broke (the only other pregnant, playable character in the base game), whose child is always a boy, Pascal's baby may be male or female. There is no hope for twins. The unborn baby will always have green skin and black hair. Most of the time it will have black eyes, but sometimes they might be dark blue like Pascal's.

In The Sims 2 on PSP, the child was a boy, who was named Tycho. In the story, Tycho was kidnapped by Vidcund Curious to make experiments, just as his dad's friend, Nervous Subject.

(in the PSP he is more like an object then a sim)