XY-XY Smith
game = The Sims 2 (console)
|name = XY-XY Smith
|image = 
|caption = When XY-XY came to earth on a mission he hoped he could succeed and leave but with Jonas in the way of trying to expose them will they ever succeed?
|sex = Male
|age = Adult
|asp = Knowledge
|state = Alien
|sign = Cancer
|hair =
|eye = Black
|skin = Green
|body = Fit
|family =
|parents =
|siblings = XHT-F Smith 
|spouse =
|maritalstatus = Single
|child =
|household =
|roommates = XHT-F Smith, Jonas Bragg
|pets =
|play = Playable
|neighbor = Pleasantview, Strangetown, and Melbourne
|theories =
}}
XY-XY Smith is an alien along with his sibling XHT-F Smith that appear on The Sims 2 console version. It seems he and his sibling adopted the surname "Smith" when they arrived on Earth. He has a -30 relationship with Jonas Bragg and a +78 relationship with XHT-F Smith.
By fulfilling his gold and platinum wants, the Bio Dome is unlocked.
It is possible he may be related to Pollination Technician 9 Smith.
Trivia
- Even though they are meant to be siblings XY-XY and XHT-F can fall in love and can get married.
- He can be clearly seen on the The Sims 2 console cover.