Natalie Morales — who guest-starred on last season's "Grey's Anatomy" — has officially joined the recurring cast of the long-running ABC drama for Season 21. In Season 20, Morales began playing Dr. Monica Beltran, a new pediatric surgeon at Grey Sloan Memorial Hospital.

Morales will first appear in the second episode of the season and is guaranteed to appear in six episodes, with an option for more.

At the hospital in Season 20, Monica was all business and was eventually convinced to mentor Dr. Levi Schmitt (Jake Borelli) in his quest for a pediatric fellowship. In her personal life, Monica said she was going through a messy divorce, but she also seemed to be a potential love interest for both Winston (Anthony Hill) and Amelia (Caterina Scorsone) in what would be a disastrous love triangle if it happened.

The official description of the character from ABC reads: "Morales plays Dr. Beltran, a pediatric surgeon who's at the top of her game and knows it. She's beloved in her field for her fierce pragmatism and common sense, and she has a smart way with both her little patients and their parents. But Dr. Beltran doesn't always see eye to eye with her colleagues and will stop at nothing to help her kids."