Martella started acting in commercials when he was around 7 years old. He went to acting school in
Orlando and acted in local productions. He appeared in the feature film
Role Models starring
Seann William Scott and
Paul Rudd. He has a lead role in the film
Bait Shop along with
Bill Engvall and
Billy Ray Cyrus. He also played Scoop in the
Nickelodeon sitcom ''
Ned's Declassified School Survival Guide and Greg in the UPN/CW sitcom Everybody Hates Chris''. He recorded his first album
Time Flies By, playing the piano and singing. The album was written and co-produced by Vincent and is available on
iTunes. Martella became known in the voice acting world for providing the voice of
Phineas Flynn in the
Disney Channel and
Disney XD animated series
Phineas and Ferb. He also provided the English voice of
Hope Estheim, a main character in the 2010 video game
Final Fantasy XIII, and reprised his role for
Final Fantasy XIII-2. He did the voice of the teenage
Jason Todd /
Robin for the animated film
Batman: Under the Red Hood, in which his younger brother, Alexander, provided the voice for the child version of Todd. Martella reprised his role as Todd in
Batman: Death in the Family. Martella also appeared in the fourth season of
The Walking Dead television series as Patrick. ==Personal life==