Noah Levenstein is Jim Levenstein's apparently geeky dad, whose awkward efforts to help Jim often cause more embarrassment than anything, despite his good intentions. He is the only character to appear in all eight American Pie films.
He shares a strong bond with Jim, and others (such as: Matt Stifler, Erik Stifler, and Tracy Sterling) look to him as a mentor and a source of guidance. His daughter-in-law Michelle Flaherty informed him that by the time of American Wedding, Jim had told her that he could talk to his father for advice about anything.
Noah grew up in the town of East Great Falls in the state of Michigan, and has known the Stifler family for years; as kids, Erik's father would often give him wedgies.
As a teenager (during the mid 60's approximately), Noah attended East Great Falls High School, just as his son would years later. During this time, he became the founding author of the school's legendary secret, "The Bible", and hid it in the school's library for future male students to find.
After high school, Noah attended the University of Michigan as his alma mater in the late 60's. He joined the BETA House fraternity and was the fraternity's president by 1968. He started the Naked Mile run as a passive protest and a way to "stick it to the man".
During 1968, the Betas were challenged to a Greek Olympiad, a traditional competition between fraternities which Beta House had never lost, by SIGMA House. As BETA president, Noah was automatically team captain for the Betas. A series of mishaps, from a bra burning protest by feminists against the Games burning down the university's administration building, to a pig causing a car to hit a power pole and trigger the Ann Arbor blackout of 1968, and others that somehow drew the attention of the National Guard and the United States Air Force would get the Olympiad banned by the university for life. Never the less, Noah still managed to lead the Betas to victory. All in all, Noah's college days became infamous, as Dwight Stifler proclaims him to be "the craziest bastard this campus has ever known".
During the years afterward, Noah met his wife, got married, and settled down to a happy domestic life helping to raise their only child, Jim. Having to deal with Jim's awkward sexual mishaps that began in high school, Noah supported and helped Jim through them, often keeping the ones that he felt would do no harm to keep from his wife a secret. As a Beta alum, Noah also serves as Beta's House-counseling consigliere for when current Betas get in trouble with the law (and as such, is on a first-name basis with the local police).
The Levensteins were happily married for many years, but sometime in 2009 after The Book of Love, Noah's wife passed away, leaving him a devastated widower.
For the next three years, he was depressed and lonely after his wife's passing but after Jim and Michelle bring him along to Stifler's reunion party, he meets his mother Jeanine and they hit it off, and begin dating - thus ending his loneliness.