MTV has confirmed something I have suspected since I screened the first teaser to Pixar’s Up.

For those of you who don’t know, Pixar hides many easter eggs in their films (you can see our compilation of the WALL-E easter eggs here). They often like to include characters from their upcoming films in the backgrounds of the frame. For example, Boo’s fish toy in Monsters Inc ended up being the title character of Finding Nemo. A kid in the doctor’s office in Finding Nemo was reading a comic book of The Incredibles. WALL-E appeared in 2D on the Ratatouille DVD short film Your Friend the Rat. And Up’s Dug the dog appeared in silhouette in Brad Bird’s Ratatouille chasing Remy through the walls of a building.

A new character from Toy Story 3 is hidden in one of the scenes, do you know which one? Details and photo after the jump.

So when the teaser trailer for Pixar’s newest film Up premiered last year, I noticed a cute little teddy bear underneath the bed of sequence where Carl’s house floats by a child’s bedroom window. I wondered if that could possibly be a new character from Toy Story 3. Up producer Jonas Rivera confirms this in a recent interview, saying that “under her bed is one of the new stars of ‘Toy Story 3’.” No word on the character’s name just yet, or which actor or animator will be providing the bear’s voice.

In that short four second scene alone, there are a bevy of Pixar Easter eggs.

The flowers on the young girl’s wall is a call back to the flowers on Boo’s door from Monsters, Inc, a film also directed by Up filmmaker Pete Docter. The yellow ball on the floor is the most obvious, hailing from Pixar’s 1986 short film Luxo, Jr, which is where the hopping lamp in the animation studio’s logo also comes from.

The drawing on the wall shows Dug the dog and Kevin the Bird, creature’s Carl meets later in his adventure. This is kinda funny because technically Dug and Kevin even had a presence in the film’s teaser trailer, even if you weren’t aware of it.

I’m curious about the dog painting on the wall. Update: /Film commenter Vanessa thinks the bulldog it’s one of Dug’s “doggie friends” — Gamma, seen below.