Additionally to various televisiaround productions, Costanzo has besides performed on stage in American productions of Bogeyman and The Good Doctor.

Costanzo is presently living around Los Angeles.

Within his grade school years, each of Costanzo's legs were broken while he was taking part within the car accident. Paulo saved the staples from either this incident for years later in, around a jar on his mantle.

For senior high school, Paulo attended Balmoral Secondary School, before transferring to Mayfield Secondary School, the local school of the arts. Around high school, Costanzo starred when Tony around his high school's production of West Side Story. Besides, his class wear the Friends parody, in which he played Ross. Costanzo later on commented to The Toronto Sun that, "I had a cold so I sounded more like a Jewish old woman Ross".

Costanzo began his non-stage career within telefilms, like numerous actors. He appeared in ''The Don's Analysy as Young Vito, as Arthur in My Date with the President's Daughter, and Yaakov/Gaston in the "Marie Taquet" segment of Rescuers: Stories of Courage: Two Couples.

Around 1998, Costanzo scored his number one truly major role in the TV series Animorphs, as a alien Aximili-Esgarrouth-Isthill.

His film career began around 2000, whenever he played Rubin Carver in the DreamWorks moving picture Road Trip. Reportedly, he experienced a few in-placed conflicts sustaining director Todd Phillips. From either there, he played Alexander Cabot III, the weak-brained friend/manager of the fictitious pop-rock band Josie and the Pussycats, in the movie Josie and the Pussycats.

Supplementary roles followed, including Troy inside Gypsy 83, as Ryan, paired Josh Hartnett in 40 Days and 40 Nights for Miramax, and when Stu, paired Alicia Silverstone and Woody Harrelson in the independent project Scorched.

Around 2003, Costanzo starred when Laurie in the American comedic film A Problem with Fear, or Laurie's Anxiety Confronting the Escalator''.

"I'm very insecure. I have low self-esteem just like a lot of actors do."

Zap2it's TV columnist Amy Amatangelo commented positively on his role in Joey. "The real surprise is Paulo Costanzo (Road Trip) who is great as Joey's nephew Michael. Michael is a rocket scientist who still lives at home with his overprotective mother and doesn't have any luck with the ladies."