He is best known for his voice roles as Beast Boy in Teen Titans, Teen Titans Go!, Young Justice: Outsiders, and Beast Boy: Lone Wolf; Michelangelo in Teenage Mutant Ninja Turtles (2012); Kevin Levin in the Ben 10 franchise (beginning with Ben 10: Alien Force); Iron Fist in Ultimate Spider-Man; Chiro in Super Robot Monkey Team Hyperforce Go!

He has made appearances in the television series Gilmore Girls, in the season four episode "Ted Koppel's Big Night Out", and Deadwood.

His film career includes playing the character Dwight Mueller in Fast & Furious, Reed in National Lampoon's Pledge This!, and Sam in Vile.

[1] Growing up, he was an avid surfer who won several competitions, eventually ranking #3 in junior surfing, Greg Cipes attended Coral Springs High School, and at the age of 20, he moved to Los Angeles to pursue a career in acting.

He voiced Atlas in the Astro Boy anime series in 2003, as well as Chiro in the Super Robot Monkey Team Hyperforce Go!

[4] Four of his roles have love interests who are voiced by Ashley Johnson (Terra in Teen Titans, Jinmay in Super Robot Monkey Team Hyperforce Go!, Gwen in Ben 10 Alien Force, and Renet in Teenage Mutant Ninja Turtles).

He has made appearances in the television series Gilmore Girls, in the season four episode "Ted Koppel's Big Night Out", and Deadwood.

The song "Rescue" on the band's 2007 debut release Conscious Revolution features teenage pop star Jesse McCartney.

In April 2017, he and Kevin Coulston created a new animated political parody impov series on Kickstarter, called A Fowl American.