A con artist and stage magician, a tornado sends him to the Land of Oz.
Adorkable: His anxiety in regards to actually doing his wizardly duties makes him more charming as a character.
Bad Boss: Has shades of this towards Frank, his long-suffering stage assistant and when Finley goes to shake his hand, Oz hands him his heavy luggage instead.
Batman Gambit: He knows the Wicked Witches still think he's a selfish, greedy fraud after he changes his ways, so he tricks them into helping fake his death by filling a hot air balloon with gold and setting it loose so they can destroy it along with his "mortal body", allowing him to take on his famous appearance as a projected head.
Beard of Evil: Sports one in order to project a mysterious and sinister image, though he's more of a Jerk. At least, at first.
Came Back Strong: Invoked. He stages his own death so he can convince everyone, including the Wicked Witches, of his "rebirth" as "Oz, the Great and Powerful".
Now, to interact normally, he dresses as a Palace Guard ("Horse of a Different Color" scene.)
The Casanova: He hits on practically every female character (with the exception of the China Girl, understandably). This bites him in the ass when Evanora mentions this trait to turn Theodora evil.
Did Not Get the Girl: In the beginning, he doesn't wind up with the girl he's romantically interested in. In the end, this makes sense, since it's largely implied that the woman becomes Dorothy's mother.
Faking the Dead: So he can take on the incorporeal form he would later be known for. He does so by having an angered witch blowing his decoy.
Guile Hero: He bests his enemies purely through well-planned prestidigitation.
Lady Killer In Love: In spite of his rampant womanizing, it's made clear that he sees Annie as more than just another fling.
Large Ham: While in front of a crowd, he's a lot more showy. Of course, he's even more so after his apparent "death".
Laser-Guided Karma: Experiences this when he finds out from Glinda that Evanora had played him like an accordion. You know, like he'd been doing to practically everyone else in Kansas, only with parlor tricks instead of real magic.
Lovable Coward: When his stage tricks don't work, he runs away. Granted, considering what he's up against, this is understandable.
Nice Hat: A magician's top hat. Utterly unremarkable in Kansas, but it's unique in Oz, and sets him apart from everyone else.
Nice Job Breaking It, Hero: Thanks to Oz's womanizing ways, Theodora is heartbroken and susceptible to being corrupted by Evanora, eventually becoming the Wicked Witch of the West. To his credit, Oz does recognize that Theodora's fall to wickedness is at least partly his fault.
The Nicknamer: "Flying Monkey" for Finley, "Wanda" for Glinda, "Sourpuss" for Knuck, and "China Girl" for, er, China Girl.
Overly Long Name: Oscar Zoroaster Phadrig Isaac Norman Henkel Emmannuel Ambroise Diggs.
Glinda: It's a magic wall. Everyone who has a good heart can pass through it. Oz:I'm gonna die!
Zero Approval Gambit: During the final confrontation between the Wicked Witches, Oscar pretends to make a getaway in a hot air balloon with a bunch of gold, making everyone think he's abandoned them. Then, when Theodora shoots down his balloon and everyone believes he's dead, he works his stage magic and a video projector to make a grand comeback as the "true" Wizard of Oz, renewing everyone's hope and scaring the witches away.
Ascended Extra: In the original film, she's just a pair of feet sticking out from beneath a house. Here, she's the Big Bad who instigates all the trouble in Oz, including the birth of the Wicked Witch of the West.
Even Evil Has Standards: She's quite visibly taken aback by Theodora's wickedness, particularly her decision to take no prisoners. It seems she's power hungry instead of openly sadistic... except when it comes to Glinda. Upon seeing the transformed Theodora, she offers to revert her physical appearance.
Evil Brit: Speaks with a British accent, even though her sisters don't.
Evil Makes You Ugly: She's been evil for so long that she's even more hideous than her sister Theodora becomes. She hides it with her magic amulet.
The Heavy: Evanora is responsible for nearly every bad event that has happened in the film series. She killed the king of Oz and created the Wicked Witch of the West.
Hot Witch: Though only thanks to the power of her magic amulet. Without it...
Karmic Transformation: Evanora's uglification when Glinda removes her necklace is a fitting karmic punishment for tricking Theodora into becoming a green-skinned witch.
My God, What Have I Done?: Evadora's face after Theodora's fall. The fact that Theodora will not accept any surrender and wants a full, genocidal attack seemed to scare Evadora.
Rapid Aging: She wears an amulet that, when destroyed, reveals her true form: an ugly, old hag.
Smug Snake: Overconfident and arrogant, but the climax reveals that she is a coward at heart and not much more easily rattled than her sister.
Trailers Always Spoil: Her role as the Big Bad was spoiled by trailers and posters. Then again, the movie doesn't treat The Reveal of her as the villain like a big surprise. However, before the movie came out, everyone just assumed that Theodora was the main villain on account of her becoming the Wicked Witch of the West — that fact was leaked. While that did turn out to be true, Evanora's reveal as the definite Big Bad was cemented, ironically, with the creation of the Wicked Witch.
Beauty Equals Goodness: Zig-zagged, but ultimately Glinda is the only witch to remain beautiful throughout the entire film.
Blow You Away: Despite initially appearing to be a Evil Is Deathly ColdIce Person, Glinda wields power over the winds, including using the iconic bubbles and creating fog. Connecting to this element, she is also calm and level-headed, as well as being defense-oriented.
Finley: Bananas? Oh, I see. Because I'm a monkey, I must love bananas, right? That is a vicious stereotype! Oz: You don't like bananas? Finley: Well, of course I like bananas, I'm a monkey. Don't be ridiculous.
Secret Keeper: Oscar confides with him his true nature early on and then orders him not to tell anyone else. He's also one of the few who knows he faked his death.
"Great. Let's go kill ourselves a witch!"
Played by: Joey King
A young, living China doll who is rescued by Oscar and joins him on his journey.
And You Were There: Her actress also plays a girl in the wheelchair in Kansas who begs Oscar to make her walk.
Beware the Nice Ones: She's all too eager to "kill [themselves] a witch" after she convinces Oscar to let her go with him on a dangerous witch hunt, and she carries around a knife to do the job. This disturbs Oscar.
Fridge Brilliance: This is meant to mirror how the Scarecrow, Tin Man, and Cowardly Lion never get names, either (at least in the 1939 movie).
Orphan's Ordeal: Oscar first finds her as the sole survivor of one of the Wicked Witch's attacks. She tells him that if he could grant wishes, her one wish is to be with her family again. Oscar manages to fulfill this somewhat by offering her True Companions to be her family, which she happily accepts.
When He Smiles: Oz and the other characters note that a smile suits him better than a frown.
The following character is a massiveWalking Spoiler. All spoilers will be left unmarked, so proceed with caution.
The Wicked Witch of the West
Played by: Mila Kunis
After having her heart broken by Oscar, Theodora is tricked by Evanora into consuming an apple that withers the goodness from her heart. This causes her transformation into the Wicked Witch of the West.
Redemption Rejection: Just before she escapes at the end, Oz gives her a chance to stay if rejects her wickedness her sister imposed on her (and presumably giving Glinda a chance to try to change her back), but she furiously refuses it. However, the poor witch is portrayed as literally being unable to choose good.
Tragic Villain: Theodora didn't willingly turn evil. Her turn and transformation was the result of Evanora's deception.