Zachary Knight Galifianakis was born on October 1, 1969, in Wilkesboro, North Carolina, and grew up in a family far removed from the Hollywood entertainment industry he would eventually enter. His mother, Mary Frances, operated an arts center, while his father, Harry Galifianakis, worked as a heating-oil vendor. His paternal grandparents were Greek immigrants, and the family name that later gave interviewers so much trouble came honestly. Galifianakis grew up in North Carolina with an older brother and younger sister and developed the peculiar comic sensibility that would eventually make discomfort, silence and deliberate social ineptitude into valuable professional assets.

After graduating from Wilkes Central High School, Galifianakis attended North Carolina State University, where he studied communications. He did not graduate, instead moving to New York City and pursuing comedy. Like most stories involving someone who eventually becomes a major Hollywood star, the early years were considerably less glamorous than the ending suggests. He performed stand-up in clubs and worked his way through small comedy venues, gradually developing an act that bore little resemblance to the polished observational routines audiences might expect from a conventional comedian.

Galifianakis became known for deliberately strange stand-up performances involving absurd observations, deadpan remarks, piano playing and interactions with audiences that could make it difficult to determine whether he was performing or had simply become annoyed with everyone in the building. His comedy often depended on undermining the expectations of stand-up itself. He might deliver a joke at the piano, interrupt himself, wander into an apparently unrelated thought or allow an uncomfortable silence to become the joke. The result was a comic persona simultaneously confident and painfully awkward, which turned out to be a surprisingly useful combination.

Television provided some of his earliest national exposure. Galifianakis appeared on Boston Common and later became a writer and performer on Saturday Night Live for a brief period, although his relationship with the venerable sketch show did not turn into a permanent job. He subsequently appeared on programs including Late World with Zach, Reno 911! and Dog Bites Man. His appearances increasingly established him as an alternative comedian whose humor worked best when conventional television behavior was quietly dismantled in front of the audience.

His film career developed gradually through supporting appearances. Galifianakis appeared in movies including Heartbreakers, Bubble Boy, Corky Romano, Below, Into the Wild and What Happens in Vegas. He was working consistently, but he had not yet become the performer whose arrival in a film could dominate an entire scene. That changed spectacularly in 2009 when director Todd Phillips assembled Bradley Cooper, Ed Helms, Justin Bartha and Galifianakis for a comedy about a Las Vegas bachelor party that goes catastrophically wrong.

The Hangover cast Galifianakis as Alan Garner, the socially peculiar future brother-in-law who joins Phil, Stu and Doug on their trip to Las Vegas. After a night none of them can remember, Doug disappears and the remaining members of the group awaken to discover a hotel suite containing, among other complications, a tiger and a baby. Alan spends much of the movie behaving as though none of this is quite as strange as everyone else seems to think.

Galifianakis' performance became one of the film's defining elements. Alan was childlike, inappropriate, strangely confident and capable of saying something completely absurd with absolute sincerity. His declaration that the group had become a "wolf pack" became one of the movie's best-known moments, while his satchel, blackjack calculations and general inability to behave normally turned Alan into a breakout comedy character. The performance earned Galifianakis the MTV Movie Award for Best Comedic Performance.

The Hangover became an enormous commercial success and transformed Galifianakis from a respected alternative comedian into an internationally recognizable movie star. Two sequels followed: The Hangover Part II in 2011 moved much of the chaos to Bangkok, while The Hangover Part III arrived in 2013. Bradley Cooper and Ed Helms returned alongside Galifianakis, and Alan remained an essential ingredient in the franchise's particular mixture of friendship, irresponsibility and catastrophic decision-making.

Success after The Hangover brought Galifianakis a wide range of film roles. He starred opposite Robert Downey Jr. in Todd Phillips' 2010 road comedy Due Date, playing Ethan Tremblay, an aspiring actor whose combination of good intentions and breathtaking irritation makes a cross-country journey considerably harder than necessary. Galifianakis also appeared in Dinner for Schmucks, It's Kind of a Funny Story and The Campaign, the latter placing him opposite Will Ferrell in a political comedy about two North Carolina congressional candidates.

He demonstrated a different side of his abilities in Alejandro González Iñárritu's 2014 film Birdman or (The Unexpected Virtue of Ignorance). Galifianakis played Jake, the friend, lawyer and producer attempting to keep Michael Keaton's increasingly unstable theater production functioning. The role was more restrained than many of Galifianakis' broad comedy performances and allowed him to operate as the comparatively sensible person amid a collection of enormous personalities. Birdman went on to win the Academy Award for Best Picture, adding a rather prestigious line to a résumé previously dominated by missing grooms, tigers and deeply questionable bachelor-party planning.

Galifianakis has also built a substantial career as a voice actor. He voiced Humpty Alexander Dumpty in Puss in Boots, bringing his distinctive delivery to the complicated childhood friend of Antonio Banderas' title character. Later voice roles included the Joker in The Lego Batman Movie, where his version of Batman's greatest enemy was unusually concerned about whether Batman regarded him as sufficiently important. He also voiced characters in productions including The Bob's Burgers Movie, Missing Link and Ron's Gone Wrong.

One of Galifianakis' most distinctive projects, however, requires almost no scenery at all. Between Two Ferns with Zach Galifianakis began as a deliberately cheap-looking online interview series in which Galifianakis sits between two potted ferns and conducts spectacularly uncomfortable conversations with famous guests. The visual presentation is intentionally dreadful, resembling a public-access television program that has somehow persuaded major Hollywood stars to appear without first explaining what will happen to them.

The interviews are built around insults, inappropriate questions, long silences and Galifianakis' fictionalized version of himself as an incompetent and frequently hostile interviewer. Guests have included Brad Pitt, Natalie Portman, Bruce Willis, Jennifer Lawrence, Bradley Cooper, Justin Bieber and numerous other celebrities. Much of the comedy comes from the guests maintaining straight faces while Galifianakis asks questions no competent publicist would willingly approve.

Perhaps the most remarkable guest arrived in 2014 when President Barack Obama appeared on Between Two Ferns. The segment mixed Galifianakis' deliberately insulting interview style with Obama's effort to encourage young Americans to visit the federal health-insurance marketplace. Galifianakis asked the sitting president questions in precisely the same awkward style he used with movie stars, while Obama responded with insults of his own. The improbable pairing generated enormous attention and demonstrated just how culturally prominent the little show between two pieces of office foliage had become.

The series eventually expanded into the 2019 Netflix film Between Two Ferns: The Movie. Galifianakis again played an exaggerated fictional version of himself, this time traveling across the country in an attempt to conduct celebrity interviews and restore his reputation after a disastrous incident involving his program. The movie retained the intentionally cheap appearance and combative interviews that made the original series distinctive while surrounding them with a deliberately ridiculous road-movie plot.

Another important chapter of Galifianakis' television career came with the FX comedy Baskets. Created by Galifianakis, Louis C.K. and Jonathan Krisel, the series starred Galifianakis in dual roles as twin brothers Chip and Dale Baskets. Chip is an aspiring professional clown who returns to Bakersfield, California, after failing to complete his training at a prestigious clown school in Paris. He eventually finds employment as a rodeo clown, which is not quite the artistic career he had envisioned.

Playing both Chip and Dale allowed Galifianakis to create two very different personalities. Chip is melancholy, pretentious and perpetually disappointed, while Dale is more aggressive and self-assured. The series blended absurd comedy with genuine sadness and family drama, demonstrating that Galifianakis could sustain a character whose humor frequently came from disappointment rather than conventional punchlines. Louie Anderson played Christine Baskets, the twins' mother, and won an Emmy for the performance.

Galifianakis later starred in the Apple TV+ film The Beanie Bubble, playing Ty Warner, the businessman behind the Beanie Babies phenomenon. The role provided another opportunity to move beyond his familiar comic persona, portraying an ambitious entrepreneur whose relationships with the women around him became intertwined with the extraordinary rise of the collectible toys. The film placed Galifianakis alongside Elizabeth Banks, Sarah Snook and Geraldine Viswanathan.

His comedy has always worked partly because Galifianakis seems remarkably comfortable making himself look foolish. Traditional Hollywood stardom often depends upon appearing glamorous, confident and desirable. Galifianakis discovered that there was also considerable money to be made by wearing questionable clothing, cultivating an enormous beard and behaving as though normal social interaction were an obscure custom nobody had properly explained to him.

Behind the deliberately uncomfortable public persona, however, is a performer capable of considerably more subtle work. Birdman and Baskets demonstrated dramatic range, while his voice performances have allowed him to create characters without relying upon the physical appearance so strongly associated with his comedy. His career has moved among stand-up, independent comedy, enormous studio films, animation, television and internet entertainment without requiring him to abandon the peculiar sensibility that made him distinctive in the first place.

Zach Galifianakis did not become successful by smoothing the rough edges off his comedy. He made the rough edges the entire point. The Hangover turned him into a movie star, Between Two Ferns made celebrity discomfort into an art form, and projects such as Baskets showed that there was considerably more behind the beard than Alan Garner. He has spent decades demonstrating that silence can be a punchline, awkwardness can be carefully engineered and two ordinary potted plants can constitute a perfectly adequate television studio. Somewhere, a professional set designer is probably still furious about that last one.