XY-XY Smith is an alien who, along with his sibling XHT-F Smith, appears in The Sims 2 console version. It seems him 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.
- Even though they are meant to be siblings, XY-XY and XHT-F can fall in love and can get married.
- He appears on the cover of The Sims 2 for console.