Jansen played the role of Robbie Hobbie in the movie Holly Hobbie and Friends: Best Friends Forever (2007), and Enrique in the movie The Perfect Game (2008).
Jansen's last name is pronounced as "Pan-Uh-Tee-Air-Ee". It means "Baker" in Italian.
Jansen's parents are soap opera actress Lesley Vogel and fire department lieutenant Alan "Skip" Panettiere.
Jansen enjoys spending his free time with his cousin Colin Panettiere.
Jansen has brown eyes and brown hair.
Jansen along with his sister Hayden, were both filmed in the Disney Channel Original Movie Tiger Cruise.
Younger brother of Hayden Panettiere, with whom Jansen shares great loyalty and affection - plus a fondness for gymnastics. Believe it or not, Jansen can do a mean standing back-flip...as he once demonstrated on an episode of the TV series America's Best Dance Crew.
Jansen: 'Cause I got good genes from my mom!
Jansen: (Talking about his character on the Nick movie The Last Day of Summer.) My character starts out shy, but by the end of the movie, he's confident like me!