In The Adventures of Tintin, this happens to several characters from the original comics, since the movie itself combines the plots of several albums. The film's version of Ivan Ivanovitch Sakharine shares the name of a minor character from Secret, but his more villainous characterization is drawn from the Loiseau Brothers from the comic, and he also inherits some traits of the comic's Omar Ben Salaad, such as his employment of Allan and his taking over the Karaboudjan.
Aladdin (Golden Films) has two examples. The Genie of the Lamp has the same roles of the Genie of the Ring, being him who rescues Aladdin from the Cave. Aladdin received a ring from Haseem, but that ring was just to protect Aladdin from harm. Since Haseem wasn't tricked and killed when Aladdin recovered the castle, Haseem takes the role of his more evil brother of the original tale, trying to kill Aladdin once more.
Rasputin as he appears in Anastasia is actually a mix between the historical character, and a character from Russian folklore Koschei the Deathless.
Barbie in A Christmas Carol: Catherine is, all rolled into one, a stand-in for Fan (Scrooge's sister), Belle (being a dear person from Eden's past), Bob Cratchit (being her employee in the present), and Fred (as a Christmas enthusiast and Eden's Morality Pet).
Captain Underpants: The First Epic Movie borrows plots from various different books in the Captain Underpants series, but most especially the first (The Adventures of Captain Underpants) and the fourth (Captain Underpants and the Perilous Plot of Professor Poopypants), with an ending hinting at the second (Captain Underpants and the Attack of the Talking Toilets), and the main hero getting actual superpowers like the third (Captain Underpants and the Invasion of the Incredibly Naughty Cafeteria Ladies from Outer Space (and the Subsequent Assault of the Equally Evil Lunchroom Zombie Nerds). A few characters take their personalities from later books in the series, like Professor Poopypants, going from a sympathetic villain pushed too far and wanting everyone to change their names, to an outright villain from the beginning who wants to get rid of laughter, Melvin Sneedley, just being mostly a background character in the early books, to being a teacher's pet and helping Poopypants in the movie, and Principal Krupp, who was given a sympathetic backstory in the movie.
Diary of a Wimpy Kid sees Chiraq take on Collin's role as Rowley's new best friend when he and main character Greg end their best friendship.
The Queen of Hearts is mainly the Queen of Hearts, but has the Duchess's bipolar personality and uses the Red Queen's line "All ways are mine". This makes less sense than it does when the Red Queen says it, since the Red Queen is a chess piece with the ability to go any way she wants on the board. Though for the Queen of Hearts, it's likely due to her ego.
The Mad Hatter in the same film gets his obsession with unbirthdays from Humpty-Dumpty.
101 Dalmatians: In the original novel, the parents of the puppies were Pongo and Missis; Perdita was later brought in because Missis couldn't nurse all of her puppies by herself. The film adaptations drop that particular plot point altogether, and combine Missis and Perdita into a single character.
Furthermore the puppy Lucky has the horseshoe pattern he had in the novel but his personality, love of tv, and being the runt who nearly didn't make it were all traits of Cadpig, a female puppy from the book.
Bambi combined a few characters from the book with others. Friend Owl is an original character to the film. He most resembles the unnamed owl character but has the gender of the screech owl character. He is also referred to in a similar way as Friend Hare, who was replaced with the younger Thumper (who is a rabbit). In the book, Bambi's father is an unnamed buck. The Great Old Prince of The Forest is an elderly buck who is rarely ever seen. He is mysterious and eventually serves as a mentor to Bambi once he grows up. In the film, his character was combined with Bambi's father, the Great Prince of the Forest.
In The Black Cauldron the characters of The Horned King and Arawn are combined. In Lloyd Alexander's five-part book series, Arawn is the Big Bad and The Horned King is The Dragon. The movie keeps "The Horned King" as his name and general appearance, but has Arawn's role as "the Dark Lord".
Aladdin condensed the two genies (magic ring and lamp) into one (lamp). In fact, this is done in most adaptations of the story. Many readers aren't even aware of the fact that there are two genies in the story until they read the original. Interestingly enough, at one point there were plans for both genies to appear.
On the other hand, it could be said that the two genies weren't combined, but rather the ring genie was replaced by the Magic Carpet. After the lamp has been stolen, it's the carpet who takes the ring genie's role of magically transporting Aladdin to the palace. The ring genie's only other contribution to the story was to rescue Aladdin from the cave, which is done by the genie and carpet together in the Disney version.
Jafar stands in for four different characters. In the original tale, Aladdin battles two evil sorcerers, and also has to contend with the vizier trying to get the princess to marry his son. Jafar is the film's only sorcerer as well as the vizier, and he wants to marry the princess himself.
Clopin in The Hunchback of Notre Dame is a composite of the original novel's Clopin (the psychotic King of the Gypsies) and Gringoire (the goofy troubadour). Phoebus also takes some things of Gringoire.
The Fates are a composite of the Fates from Classical Mythology (the youngest Fate spins a thread representing a person's life, signifying his/her birth; the middle weaves said thread, therefore determining how long that person will live; and the oldest cuts the thread, therefore killing the person the thread represents) and the Gray sisters (they all share a single eye).
Meg is a combination of two of Heracles' wives, Megara (whom she shares her name with) and Deianira (being saved from a perverted centaur).
Phil is a combination of Philoctetes (who he shares his name with), Chiron (as his role of being Heracles' trainer), and Pan (in terms of appearance and personality).
Hades is a composite of the Greek god Hades and Hera, the Big Bad of the original myth, with Hera herself undergoing Adaptational Heroism in the Disney version.
In Tarzan Kerchak is a composite of Burroughs's Kerchak (leader of the Mangani during Tarzan's childhood) and Tublat (mate of Kala who is vaguely resentful of Tarzan, but not a villain). To confuse things further, The Legend of Tarzan introduced a character more like the book version of Kerchak (violent killer ape seeking revenge on Tarzan) ... and called him Tublat.
In Meet the Robinsons, Wilbur has a cousin named Tallulah who loves weird fashion. In the book he has two sisters, one of whom is named Tallulah while the other, Blanche, has that trait. More notably, the film combines the protagonist, Lewis, with Mr. Robinson, since Wilbur is his Kid from the Future.
Queen Elsa from Frozen is a composite character of the Snow Queen and Kai from The Snow Queen. Naturally, she is based off the Snow Queen for being a queen with ice powers and a palace made of ice, but her role in the story is closer to that of Kai, a character who grows distant from a loved one (in this movie, her sister Anna) and they ultimately reconcile through the Power of Love. What elements of Kai were not used to create Elsa were used, along with those of the Robber Girl, to create Kristoff.
Maui from Moana is an amalgamation of his mythological counterpart's various stories from different Pacific Island traditions, although a lot of the stories are shared among many of these traditions. Some of the specific details:
In most traditions, Maui pulled that particular people's home island from the ocean. Therefore, the movie Maui has a history of pulling up island after island.
Retrieving fire comes from every tradition's depiction of Maui except the Hawaiian one, ironically.
Likewise, halting the once-erratic sun is present in most depictions of Maui.
His use of a fishhook as his primary weapon may stem from the Tongan Maui.
Creating the coconut trees from the guts of an eel he buried and hoisting up the sky are both taken from the Hawaiian Maui.
Having been abandoned at birth is taken from the Maori depictions of Maui, who was abandoned into the sea as a premature birth, only to be rescued and cared for by ocean spirits and his divine ancestor before returning to his family as a teen.
Mortal Kombat Legends: Battle of the Realms features Li Mei but her character, her appearance, her role among the villain team (as opposed to being a hero like she is in the games) and general brutality make her have far more in common with Mileena who is Adapted Out of the story despite debuting in the second tournament which the movie adapts.
In Puss in Boots the giant in the Jack and the Beanstalk tale is long dead before the story begins. The golden goose that was their target is just a chick, and its mother (presumably the true goose from the tale) is the giant that Puss and company have to deal with.
Garett, the blind would-be knight in Quest for Camelot, is something of a composite of Kayley/Lynette's two love interests in The King's Damosel; the knight Sir Gareth and the blind Lucius.
The Super Mario Bros. Movie is an interesting example, as it uses different versions of the same characters and combines them into a new one.
These versions of Mario and Luigi are from Brooklyn, making them partially in line with early adaptations such as The Super Mario Bros. Super Show! and the live-action film. They have the same elements that define their main game appearances as well, such as their physical appearances and acrobatic abilities.
The film's design for Donkey Kong has an appearance similar to that of the arcade version, having the face design from the arcade game, but also brings in features from Donkey Kong Country, such as his tie.
Toad uses his main design from the games, but also wields a frying pan and has an adventurous personality like Captain Toad from Super Mario Galaxy and Captain Toad: Treasure Tracker. When he's introduced, his themes from those games play to telegraph the intention.
In Tarzan (2013), Tublat takes the role of Kerchak, who was the original rival to Tarzan.
A variation in Inside Out. The six basic emotions in psychology are joy, sadness, anger, disgust, fear, and surprise. The first four of these emotions are each personified by a character named after the emotion, while fear and surprise are personified by one character, simply called "fear".
Glinda in The Wizard of Oz looks a lot like Ozma (who isn't introduced until the second book and doesn't meet Dorothy until the third). She wears a similar ringlet and dress as Ozma.
Son of the White Horse combines two versions of the same basic folktale (Son of the White Mare and Treeshaker, Irontemperer, Mountainroller), and in doing so melds multiple characters:
In Son of the White Mare, the main hero is an only son and meets three powerful but shady men, Treeshaker, Stonecrumbler and Irontemperer, with Treeshaker being the weakest and most useless. After they betray him, he kills all three. In the other version, Treeshaker takes the Son of the White Mare's role and he's the strongest and most capable. He was also born from normal human parents and he spares the lives of the other two. The movie combines them into its own Treeshaker, who is the strongest of the bunch and has a horse for a mother.
Stonecrumbler is therefore a mix of the original Treeshaker (being the weakest), Mountainroller (he pushes mountains around) and the actual Stonecrumbler. Both him and Irontemperer are Treeshaker's brothers in the movie, thus sharing their origin with the Son of the White Mare. They survive the movie and are hailed as heroes by the end, as opposed to the original folktale where they're evil and are slain by the Son of the White Mare who is unrelated to them.
In the tales, the man in the forest, the evil Gnome and the king (if the latter appears at all) are separate. In the movie, they're just different forms of the same entity, the primordial Rain King who was partially based on various Eurasian forefather deities (his one eye is a nod to Odin). The White Mare herself is also an amalgamation of the folkloric White Mare and an ancient goddess. In the folktales, there are no gods or deities whatsoever.
Some of the original stories open with traditional folktale fluff about "77 dragons living on 77 roots". These opening lines are unrelated to the stories, they only serve to grab the listeners' attention. The film opted to actually put these 77 dragons into its plot as living chain links that can interlock and separate at will, and combined them with a giant snake from folk tradition.
Hercules (Pure Magic) combines the Mad Boar of Erymanthean and the Lion of Nemea into a giant boar that has indestructible skin and rock-shattering tusks.
In Cricket on the Hearth, the characters of Bertha Plummer and May Fielding from the original Charles Dickens story are combined into just one heroine, Bertha. In the original story, the character of Edward is Bertha's brother and May's love interest, but in this version he's Bertha'slove interest instead.
