Question: When does callie come in grey's anatomy?
Disambiguated questions and answers: question: What date does Callie Torres first appear in Grey's Anatomy?
Which episode does Callie Torres first appear in Grey's Anatomy?
What date does Callie Torres start to appear in Grey's Anatomy as a series regular?
What episode Callie Torres start to appear in Grey's Anatomy as a series regular?
answer: February 26, 2006
"What Have I Done to Deserve This?" (2.19)
September 21, 2006
"Time Has Come Today" (3.01)
Natural Questions answer: Season 9 (from the Wikipedia article "Callie Torres")