Pixar is introducing fans to the main characters of their upcoming animated comedy Inside Out with a series of new posters and previews that are being released throughout the week, starting with today's one-sheet and featurette that feature Sadness, voiced by Phyllis Smith (The Office).

The story centers on an 11-year-old girl named Riley, who moves from her Midwestern hometown to San Francisco after her father gets a new job. The film takes us inside Riley's head, and the emotions that guide her, such as Sadness, Joy (voiced by Amy Poehler), Fear (voiced by Bill Hader), Anger (voiced by Lewis Black) and Disgust (voiced by Mindy Kaling), who all live in a "control center" in Riley's mind.

Phyllis Smith shared new details about her character Sadness in an interview with Mashable, where all five character posters will debut throughout the week. Here's what the actress had to say about how Sadness is always thinking ahead.

"Well, my emotion Sadness is fun in a sad way. She is smart and always thinking ahead. Since many of her scenes are with Joy, I usually say Sadness is a ball and chain around Joy's ankle, and a challenge to Joy."

When asked how she got cast, Phyllis Smith revealed that producer Jonas Rivera wanted to bring her on board after watching the lunchroom scene in Bad Teacher.

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"I was told by the producer (Jonas Rivera) that he was watching Bad Teacher and saw me in the lunch scene and knew I was Sadness. He called [director] Pete Docter and said, 'I think we found our Sadness.'"

When asked when was the last time she truly felt sad, Phyllis Smith had this to say.

"On a frivolous level when the San Francisco Giants beat the St. Louis Cardinals in the playoffs and again when the Giants beat Kansas City Royals in the World Series. On a more heartfelt level, I just lost a dear friend who was 101 years old, but I was blessed by his friendship and knowledge for the past 35 years so that brought me joy."

Check out the poster and a brief introductory video for Sadness below, then check back tomorrow to meet Mindy Kaling's Disgust.

<strong><em>Inside Out</em></strong> Sadness Character Poster
<strong><em>Inside Out</em></strong> Poster