Often collaborates with animator Joe Murray, voicing Rocko in Rocko's Modern Life and Lazlo and Clam in Camp Lazlo. He is best known as Denzel Q. Crocker, Dinkleberg, and Juandissimo Magnifico from The Fairly OddParents!. He has also voiced the titular protagonist of the first game in the Spyro the Dragon series (later games and TV series would have the role taken over by (in order) Tom Kenny, Jess Harnell, Elijah Wood (for the Legend trilogy), Josh Keaton and Matthew Mercer (for the Skylanders games) and Justin Long (for the Skylanders Academy TV series)), the Taco Bell chihuahua, Rikochet in the first two seasons of ˇMucha Lucha! and Mr. Weed (the head of the "Happy Go Lucky" toy factory) on the early episodes of Family Guy which showed Peter as a toy factory worker (as opposed to the later episodes where he works at the Pawtucket Patriot Beer factory and a multitude of other, short-lived jobs).
Other notable roles include The Life and Times of Juniper Lee where he played Monroe, a guardian dog with a Scottish accent, Salty Mike from Squirrel Boy, Walden in Wow! Wow! Wubbzy!, Nestor in Happy Feet, Tonraqnote and the Equalist protestor in The Legend of Korra, Bane in Justice League: Doom, and El Chupacabra in Planes. He also serves as Disney's go-to guy to voice Mike Wazowski from Monsters, Inc. and Monsters University (voiced in both originally by Billy Crystal) in their various spinoff media.
Roles of Carlos Alazraqui
- The Taco Bell Chihuahua.
- Rocko and Spunky from Rocko's Modern Life
- Spyro the Dragon
- Doctor No in Goldeneye Rogue Agent
- Various supporting characters in Hey Arnold!
- Winslow and Lube from CatDog
- Mr. Weed from Family Guy
- Denzel Crocker from The Fairly Oddparents
- Rikochet from ˇMucha Lucha!
- Deputy James Garcia from Reno 911!
- Monroe from The Life and Times of Juniper Lee
- Lazlo and Clam from Camp Lazlo
- Walden from Wow! Wow! Wubbzy!
- Salty Mike from Squirrel Boy
- Nestor from Happy Feet
- Felipe from Handy Manny
- Puma Loco from El Tigre
- Tonraq from The Legend of Korra
- Bane in Justice League: Doom & Batman Unlimited: Mech vs. Mutants
- Mesmo and Torts from Mixels
- El Chupacabra from Planes
- Mayor Temeroso from The Adventures of Puss in Boots
- Darc from Arc the Lad: Twilight of the Spirits
- General Posada and Chuy the pig in The Book of Life
- Skylar on Elena of Avalor
- Larry in Scooby-Doo! Shaggy's Showdown
- Golly Gopher in Out of Jimmy's Head