His last name is pronounced "Pan-Uh-Tee-Air-Ee"; the Italian translation is "Baker". His father has Italian ancestry, and his mother has English and German ancestry on one side and Italian ancestry on the other (Jansen's maternal grandmother's parents were Italian immigrants).
Like his actress-sister Hayden Panettiere, Jansen has a fondness for music and gymnastics as well as acting; he plays guitar, and can do a mean standing back-flip.
Is a black belt in the Israeli martial art of krav-maga ("survival").
Personal Quotes (1)
[on being looked out for by his famous sister, and on being a "second father"] I can just see us in our 90's...when an eighty-something pokes me with a stick, she comes over and smacks him with a cane. Then again, I look out for her as well; my classmates tell me all the time that she's hot. I just say one thing back: "Watch it"!