Sydney Bristow (Alias)
To her friends, Sydney Bristow was a globe-hopping banker who was too busy balancing international checkbooks to be on time for dinner. In reality, Sydney was an international super spy who kept the world safe from Arvin Sloane's megalomaniacal schemes.
Arya Stark (Game of Thrones)
Always the tomboy, Arya got a haircut to match her personality after escaping the evil clutches of the Lannisters and is currently traversing the countryside as an orphan boy named Arry.
Barney Stinson (How I Met Your Mother)
The legen — wait for it — dary lothario has adopted hundreds of fake personas, from astronauts to women, all in the quest to have as many one-night stands as possible.
Emily Thorne (Revenge)
To punish the people who falsely imprisoned her father, Amanda Clarke assumed the Emily Thorne identity and embraced the red Sharpie lies required to get her ultimate revenge.
Nicholas Brody (Homeland)
After eight years in Afghanistan captivity, the P.O.W. returned to America with a major secret: he was now a sleeper agent with the singular goal of decimating the executive office.
Frank Underwood (House of Cards)
D.C.'s preeminent puppetmaster lied, cheated and murdered his way to the Vice Presidency, which is, as he creepily reminds you, "one heartbeat away from the presidency and not a single vote cast in my name."
Neal Caffrey (White Collar)
In order to have his four-year prison sentence expunged, the world-class conman accepted a job with the F.B.I. and now uses those tremendous grifting skills to capture his former criminal comrades.
George Costanza (Seinfeld)
The man who once said, "It's not a lie if you believe it," was television's premiere duke of deceit for nearly a decade, tricking the world (but mostly himself) into thinking he was an integral member of society.
Creed Bratton (The Office)
Fans learned a lot about Dunder Mifflin's most mysterious drone over The Office's nine seasons: he claimed to have been in prison, in an iron lung, fathered a child, been a cult member, and asserted to be 82 years old, 64 years old, and 30 years old. Very little of it was likely true. In fact, the only thing we definitely know about Creed is that he's a kleptomaniac.
Dan Humphrey (Gossip Girl)
"Who Is Gossip Girl?" The CW's soapy dramedy teased that question for six seasons before revealing in the 2012 finale that Dan Humphrey had been behind the bitchy blog all along. A revelation that rocked fans because, well, it made no sense when you actually examined the show's timeline.
Olivia Pope (Scandal)
Olivia Pope demands the truth from her clients, her colleagues, her family, and her lovers so she can properly lie to their faces.
Sarah Manning (Orphan Black)
To the world at large, police officer Elizabeth Childs is alive and well. That's because Sarah Manning assumed her identity, after watching the woman she took to be her doppelgänger commit suicide.
Don Draper (Mad Men)
Every word out of the ad man's mouth should be questioned (his name isn't even Don Draper, it's Dick Whitman) as every syllable is expertly designed to sell you on his products, his persona, or his principles.
Veronica Mars (Veronica Mars)
California's premiere pint-sized private investigator would adopt any persona, profession, or predilection to trap her target.
Mike Ross (Suits)
Thanks to an eidetic memory, the wunderkind had been paying his bills by acing the LSATs for other people after being expelled from college. Eventually he used his photographic memory to score a job at New York's top law firm, where he spends as much time protecting his clients as he does protecting his secret.
Jenna Maroney (30 Rock)
The egotistical, delusional, and homicidal star of NBC's TGS spewed dozens upon dozens of falsehoods every single day out of fear that the world would replace her with a younger model, discover her lack of talent, or — gasp — learn her real age!
Benjamin Linus (Lost)
Given the fact he murdered hundreds of DHARMA employees, staged a coup, and established his own cult-like community on the memory-manipulating island, it's no surprise even Ben had trouble separating fact from fiction.
Cliff Clavin (Cheers)
Cliff could elegantly speak on any subject — regardless of whether or not his information was accurate. The know-it-all inexplicably ended up as a contestant on Jeopardy, where he thrived ... mostly because the categories were, seemingly, tailor-made for him.
Jane Bingum (Drop Dead Diva)
Legal eagle Jane Bingum relies on truth to exonerate her clients, but is lying to nearly everyone in her personal life because she's actually Deb Dobkins, a supermodel whose soul was accidentally placed back inside Jane's body when both had simultaneous near-death experiences.
Saul Goodman (Breaking Bad)
There's a reason New Mexico's biggest criminals know they "Better Call Saul!" He's the only man who will happily conceal their crimes ... and facilitate some additional "business opportunities" for good measure.