The Bug-Eyed Bandit is named Brie Larvan rather than Bertram Larvan.
The Top's real name is Rosalind "Rosa" Dillion instead of Roscoe Dillon.
Black Bison's real name is Mina Chayton rather than John Ravenhair.
The Fiddler's name is changed from Isaac Bowen to Izzy Bowen.
Spin was only known as "Mr. Auerbach" in the comics (his first name was never given), while in the show, her real name is Spencer Young.
Although the Earth-2 Mirror Master remains Evan McCulloch, his Earth-Prime counterpart is a woman named Eva.
Barry and Iris' daughter is named Nora instead of Dawn. She's also a Composite Character of Jenni Ognats, as she uses XS as her superhero identity. In the 100th episode, the Reverse Flash calls her Dawn, implying that was her name in the original timeline that he came from, making it an In-Universe example.
Connor Hawke's birth name is revealed to be John Diggle, Jr., as his father is John Diggle in this continuity.
In The Secrets of Isis, the title character's real name was Andrea Thomas. The comics had previously Race Lifted her as a Khandaqi named Adrianna Tomaz. Here, she's an Arab-American called Zari Adrianna Tomaz.
Mexican version El privilegio de amar changed most of the names: Victoria Ascanio became Luciana Duval; Alejandro Ascanio became Andrés Duval; Luis Alfredo became Victor manuel; Priest Ángel de Jesús became Priest Juan de la Cruz (in this case, retained the Christian motif in both versions). Basically, only (co-)protagonist Cristina kept the same first name, altough the surname was different.
Brazilian version, also named Cristal, kept most of original names intact, with minor adjustments to fit Portuguese language names, with exception of male protagonist Luis Alfredo, renamed as João Pedro.
Dirty Dancing: Baby Houseman becomes Baby Kellerman, daughter of the resort owner, while the rest of the Housemans are Adapted Out. Penny's last name changes from Johnson to Rivera, and Penny gets a Race Lift to match her Latina actress.
Elasti-Girl is renamed "Elasti-Woman" to avoid confusion with the Pixar's The Incredibles character, Elastigirl. Also, flashbacks later reveal that "Rita Farr" is just a Stage Name, with her real name being Gertrude Cramp.
Animal-Vegetable-Mineral Man's real name is changed from Sven Larsen to Steven Larson.
The Men from N.O.W.H.E.R.E are renamed the Bureau of Normalcy.
The Dresden Files: When The Dresden Files was adapted into a TV series, Lt Karrin Murphy was changed to Connie Murphy, as there was an actual Karen Murphy in the Chicago Police Department. Additionally, Harry's mentor Justin DuMorne in the novels was renamed to Justin Morningway and made Harry's maternal uncle, possibly to make it more likely that he would raise Harry after his parents' deaths.
Elementary: Sherlock Holmes' primary Friend on the Force in this adaptation is Captain Gregson, based on a minor character from the original Doyle canon. Early promotional material and reviews indicated that he shared the original character's full name, Tobias Gregson, but his first name was not used on screen until the second season which revealed his name was now Thomas Gregson.
In this version, the protagonist's real name is Stephen, with "Flash" being a nickname he got from his father for being a fast runner. In fact, Flash's real name becomes a plot point in the pilot, when his mother is mind-controlled to call him and ask him to come home, calling him "Flash" in the process. He realizes something's wrong, as his mother always calls him by his real name.
Ming the Merciless is now Ming the Benevolent Father, although he's still quietly called "the Merciless" behind his back.
Blink's real name is changed from Clarice Ferguson to Clarice Fong, due to her being Race Lifted into an Asian-American.
In the comics, the Stepford Cuckoos all have the surname "Cuckoo." Here, they all have the last name "Frost," as Emma Frost is known to be their mother from the beginning, unlike in the comics, where their true parentage wasn't revealed until quite a while after they were introduced.
Poison Ivy's real name is changed from "Pamela Isley" to "Ivy Pepper."
The Dollmaker's real name is now Francis Dulmacher, rather than Anton Schott or Barton Mathis.
It was initally thought that Amygdala underwent this as a character in Season 1 with a similar background named "Aaron Danzing" appeared. Ultimately however, this was subverted as Season 2 saw the actual Aaron Helzinger appear.
Tigress goes from "Paula Brooks" (or "Artemis Crock") to "Tabitha Galavan."
Firefly is given a Race Lift and Gender Flip, and as such, goes from being a white guy named Garfield Lynns to a Latina woman named Bridget Pike.
The Ogre is named "Jason Lennon" (born "Jason Skolimski") instead of "Michael Adams"
Of course, in the cases of the Dollmaker, Tabitha, Firefly and the Ogre they are more or less different characters than the ones from the comics. In the Dollmaker's and the Tigress's case there were even a few different people in the comics under this mantle.
The surname of the Helstrom family has been slightly modified to seem less sinister (in this case, removing one "l", turning "Hellstrom" to "Helstrom").
Daimon's sister is known as "Ana Helstrom" rather than Satana or her human alias of Judith Chambers.
The Incredible Hulk (1977): This TV adaptation of the comic changed Robert Bruce Banner to David Bruce Banner, and the character would call himself by his first name, instead of his middle name. This was due to the network thinking Bruce sounded "too gay", as well as the head writer wanting to ditch the "comic booky" Alliterative Name trope.
In the comics, Vinnie and Morgan Edge are a father-son duo and leaders of Intergang. In the television show, however, they become Bill Church Sr, introduced in "Church of Metropolis", and he was subsequently replaced by his son Bill Church Jr, whose front organisation was a media empire called Multiworld Communications, with Multiworld standing in for Galaxy Broadcasting.
In the "New Krypton" arc, Lord Nor is General Zod in all but name.
Daisy Johnson is rechristened "Skye" for the first season and a half before her father reveals her birth name. It's also mentioned that she used to go by the name "Mary SuePoots" while growing up in an orphanage. [invoked]
Her parents' names were also changed to reflect her modified heritage, including which parent she got her surname from. In the comics, her father, Calvin Zabo, impregnated a prostitute named Kim Johnson. In the show, Calvin Johnson was Happily Married to a Chinese woman named Jiaying. There's a bit of a nod to Dad's original name when he says he used a more sinister surname when he was on the run, though that may have been a reference to his supervillain codename, Mister Hyde.
Daniel Whitehall's real name is changed to Werner Reinhardt. "Daniel Whitehall" is an alias he came up with to hide the fact that he's both Older Than He Looks and a Nazi war criminal. (In the comics he's a British agent before he joins HYDRA.)
Mark Scarlotti (one of the supervillains called "Whiplash" in the comics) was changed to Marcus Scarlotti (with no codename).
In the comics, it's unknown what Lash's name was before he underwent Terrigenesis. In the show, it's Dr. Andrew Garner.
Vanessa Fisk (from The Kingpin) is Wilson Fisk's wife in the comics and is just his girlfriend (surname Marianna) in the television show.
In the comics, Bullseye's full name has never been revealed, but it's known that his first name is Lester, and that he's used "Benjamin Poindexter" as an alias. In the TV show, Benjamin Poindexter is explicitly his real name, though he's called "Dex" by most people.
Though not obvious at first, there is Jessica herself. In the comics, Jessica's birth name was Jessica Campbell and she is later adopted by the Jones family after her accident. In the show, her last name has always been Jones, which was not changed by her adoption.
Subverted with Trish Walker (from Patsy Walker), with Patsy being an Affectionate Nickname used by fans of her previous TV show; her real name is Patricia and both Patsy and Trish are uncommon nicknames.
Zebediah Killgrave's is modified to "Kilgrave". Or seems to be, as his real name is Kevin Thompson and hence "Kilgrave" is his nickname.
Malcolm Powder becomes Malcolm Ducasse.
Frank Simpson (the supervillain Nuke) is renamed Will Simpson. This is for two reasons: the first is to hide the plot twist, and the second is to avoid name confusion with Frank Castle / The Punisher, who was about to be introduced in season 2 of Daredevil (2015).
The Whizzer's name is changed from Robert Frank to Robert Coleman.
In Runaways, Molly is Race Lifted from white to Latina, with her last name changing from "Hayes" to "Hernandez" as a result.
WandaVision: Django and Marya Maximoff are renamed Oleg and Irina Maximoff.
The Falcon and the Winter Soldier: Lemar Hoskins is a downplayed example - while his real name and codename (Battlestar) are taken straight from the comics, his comic self used the codename Bucky for a time before becoming Battlestar, while in the show, he's Battlestar from the get-go. Justified, as the original codename had Unfortunate Implications which writer Mark Gruenwald had been unaware of at the time ("buck" being a derogatory term for a black man), and unlike in the comics, Bucky's name is treated only as his name, and not as a legacy identity.
"James Hook" was an alias in the original book, but the narrator refuses to reveal their real name, implying that to do so would cause a scandal. In Disney's Peter Pan, "Captain Hook" is the real name of the character; he was named "James Hook" even before he had a hook. However, in the television show, it comes full circle as Captain Hook is an alias and his real name is Killian Jones.
"Prince Charming" is more of a generic title, the original story doesn't necessarily have a name for him at all. In Disney's Snow White and the Seven Dwarfs, he's never named onscreen (if it comes up, the name is Ferdinand). However, in the television show, the prince's actual given name is James, and "Prince Charming" is just something Snow White calls him, sarcastically at first and then genuinely.
Oranges Are Not the Only Fruit: The TV adaptation changed Jeanette's name to Jessica, possibly to detract from the autobiographical elements of the story.
The NS-2 series robots are never called by their model number, and their In-Series Nickname is spelled "Nester" instead of "Nestor".
United States Robots & Mechanical Men are instead called the Universal Robots Corporation.
In the adaptation of "The Cold Equations", Marilyn Lee Cross's name is shortened to simply Lee Cross.
In the adaptation of "Impostor", Spence Olham's name is changed to Robert Carter.
The Plot Against America: In the original novel, author Philip Roth named the main character after himself and the members of the character's family after his own. He asked the showrunners of the miniseries to change the names because he was only comfortable with them being used when he had full authorial control over them.
Alex's former wife and Jimmy's mother, Ellen, had her first name changed to Nancy.
The Old Man became the OCP Chairman.
Sabrina the Teenage Witch: Some of the characters changed names between the TV movie and the television series; Sabrina Sawyer was changed to Sabrina Spellman, Marnie became Jenny, and Katy LaMore became Libby Chessler.
Lex Luthor's father, who had been named Jules Luthor in pre-Crisis continuity, became Lionel Luthor. Since Lex's father had not previously been given a name in post-Crisis continuity, this was quickly Ret Canoned.
In "Time Enough at Last", Henry Bemis' wife is named Helen. In the short story by Lynn Venable, her name is Agnes.
In "Perchance to Dream", the protagonist is named Edward Hall. In the short story by Charles Beaumont, his name is Philip Hall.
In "What You Need", Pedott's ability to see the future is taken advantage of by Fred Renard. In the short story by Lewis Padgett (the pseudonym of the writing team C. L. Moore and Henry Kuttner), their names are Peter Talley and Tim Carmichael.
In "Elegy", the caretaker of the cemetery asteroid Happy Glades and the most rational crewman are named Jeremy Wickwire and Professor Kurt Meyers respectively. In the short story by Charles Beaumont, their names are Mr. Greypoole and Mr. Friden.
In "The Chaser", Roger Shackleforth is madly in love with Leila. In the short story by John Collier, their names are Alan Austen and Diana.
In "Shadow Play", the newspaper editor and Henry Ritchie's wife are named Paul Carson and Carol respectively. In the short story "Traumerei" by Charles Beaumont, their names are Max Caplan and Ruth.
In "The Jungle", Alan Richards, whose wife's name is Doris, is cursed by an African tribe called the Kekouyu. In the short story by Charles Beaumont, Richard Austin, whose wife's name is Mag, is cursed by the Bantu, a real life collection of ethnic groups in sub-Saharan Africa.
In "In His Image", the respective names of the protagonist, his creator, his fiancée and his supposed neighbor are Alan Talbot, Walter B. Cummings, Jr., Jessica Connelly and Agatha Cook. In the short story "The Man Who Made Himself" by Charles Beaumont, their names are Peter Nolan (a tribute to Beaumont's friend and fellow writer William F. Nolan), Walter B. Ryder, Jr., Jessica Lang and Jenny Cook.
In "Printer's Devil", Douglas Winter, the editor of The Dansburg Courier, is visited by the Devil under the name Mr. Smith. In the short story "The Devil, You Say?" by Charles Beaumont, Richard Lewis, the editor of The Danville Daily Courier, is visited by the Devil under the name Mr. Jones.
In "Of Late I Think of Cliffordville", the protagonist is named William J. Feathersmith. In the short story "Blind Alley" by Malcolm Jameson, his name is Jack Feathersmith.
In "Passage on the Lady Anne", the McKenzies' names are Toby and Millie. In the short story "Song for a Lady" by Charles Beaumont, their names are Jack and Sally.
In "Number 12 Looks Just Like You", the names of the protagonist, her mother and her psychiatrist are Marilyn Cuberle, Lana Cuberle and Dr. Rex respectively. In the short story by Charles Beaumont, their names are Mary Cuberle, Zena Cuberle and Dr. Hortel.
In "Shatterday", Peter Jay Novins' alter ego does not have any other name to distinguish him from the original Novins. In the short story by Harlan Ellison, the original Novins decides to call him "Jay."
In "A Matter of Minutes", the protagonist's name is Michael Wright. In the short story "Yesterday Was Monday" by Theodore Sturgeon, his name is Harry Wright.
In "Dead Run", the former member of the Celestial Bureaucracy who has himself been condemned to Hell is named Gary Frick. In the short story by Greg Bear, his name is Charlie Frick.
In "Devil's Alphabet", the seven members of the Devil's Alphabet Society are Andrew, Brian, Cornelius, Deaver, Eli, Frederick and Grant. In the short story "The Everlasting Club" by Arthur Gray, Alan Dermot, Charles Bellasis, Henry Davenport, Francis Witherington, James Harvey, William Catherston and one unnamed man are the seven members of the titular society. Dermot and Bellasis correspond to Grant and Frederick respectively but it is not made clear with respect to the other five.
In "Shadow Play", the district attorney is Mark Ritchie, Adam Grant's fellow prisoners are Flash, Jimmy and Munoz and the priest who visits him before his execution is Father Grant (as he is his father in the real world). In the original episode, their names are Henry Ritchie, Jiggs, Coley, Phillips and Father Beaman respectively.
In "The After Hours", the protagonist's name is Marsha Cole. In the original episode, it is Marsha White.
The White Queen: The TV adaptation of The Cousins' War Series renames Elizabeth Shore to Jane Shore, avoiding confusion with the two main characters already named Elizabeth (and because "Jane" is the name she used in Real Life and is better known by as a historical figure).
The 1989 ITV adaptation of The Woman in Black changes the main character's name to Kidd, apparently because Nigel Kneale saw the name "Arthur Kipps" as a reference to the H.G. Wells character of the same name, and as a Wells fan, felt it was inappropriate.
Carolyn Hamilton turns out to be Nubia, whose name is simply Nubia in the source material but who adopted that as her Amazon name in the series.
Yo soy Betty, la fea: The many different Foreign Remakes usually change the characters names (but keeping the tendency of having a nickname of the "shortened first name" type for the protagonist). The protagonist's name was originally Beatriz "Betty" Aurora Pinzón Solano.
La Fea Más Bella: This Mexican remake features Leticia "Letty" Padilla Solis de Mendiola.