Chad Warden: C.Wizzy, Chad Daddy. I go by many different names. Big Poppy, a'ight...
—Why the PS3 is better than the Wii and 360 (part 2)

Uno: Legend has it the Grey Men are walking around.
Ragan: The Soulless.
Masema: The Shadowsoulled.
Lan: The Shadow-eyed.
Moiraine: The Shadow-walkers.
Min: The Soul Brothers?
Uno: The Soul Masters.
Min: Oh, the Funky Shadow Dancers.
Moiraine: The Dark Soul Chorus.
Lan: The Dark One's Ensemble of Evil-Souled Dark Nightwalkers.
Min: I wonder if they'll show up later in the story.
Lan: Probably not.

—A mock summary for the Wheel of Time series.

Many are my names in many countries, Mithrandir among the elves, Tharkûn among the dwarves; Olórin I was in my youth in the west that is forgotten, in the south Incánus, in the north Gandalf; to the east I go not.

He has been known by many names; the Prince of Lies, the Director, Lucifer, Belial, and once, at a party, some obnoxious drunk kept calling him "Dude".
— Stig's Inferno

Aveline: I know what she is, the Witch of the Wilds.

Flemeth: Some call me that. Also Flemeth. Asha'belannar. An old hag who talks too much.

Although SCP-507 has an already-established name due to its unremarkable upbringing, it seems to find entertainment in forcing those it meets to give it a nickname in lieu of divulging this information. Thus SCP-507 will now respond to the names Tommy, Steve, Bruto, Guy, Houdini, and Grabnok the Destroyer.
—SCP Foundation, SCP-507

"Yeah, I go by a few names. Johnny Reubonic, Don Rubio... Cool the Underdog."

My name is Ben Sobel... -lioni. Ben Sobellioni. I'm also known as, uh, Benny the Groin, Sammy the Schnazz, Elmer the Fudd, Tubby the Tuba, and once as Miss Phyllis Levine.

The most famous hero of the story of the New York City underworld is Edward Delaney, alias William Delaney, alias Joseph Marvin, alias Joseph Morris—alias Monk Eastman, the leader of a gang of twelve hundred men.
Those shifting "dodges" (as tedious as a game of masks in which one can never be certain who is who) fail to include the man's true name—if we allow ourselves to believe that there is such a thing as "a man's true name." The fact is, the name given in the Records Division of the Williamsburg section of Brooklyn is Edward Ostermann, later Americanized to Eastman.

You speak my name, but you do not know me. I am Ch'rell, Oroku Saki, Duke Acureds, the ONE, TRUE, SHREDDER! I am a destroyer of worlds, and I fear NO-ONE!

So as through a glass, and darkly
The age long strife I see
Where I fought in many guises,
Many names, — but always me.
— George S. Patton, Through a Glass, Darkly

Kevin Lomax: Who are you?

John Milton: Oh, I have many names...

Who am I? One name you might have for me is the World, or you might call me the Universe, or perhaps God, or perhaps the Truth. I am All, and I am One. So of course, this also means that I am You.