The Ancient One assigns Wong to become Stephen Strange's teacher, and has helped Strange master his skills and become one of Strange's allies. Wong is an expert magic user and a master martial artist, who later becomes the Sorcerer Supreme on a technicality after Strange blips for five years.
Wong's main development is being very wise, and very serious and possessing a no-nonsense attitude. However, he is known for allocating some of his time for other activities such as listening to Beyoncé or participating in drunk karaoke. Other than that, not much else is known about his character.
Wong appears as a sorcerer at Kama Taj, where he meets Stephen Strange after his car accident and offers to help train the visitor along with the Ancient One. Wong isn't too impressed with Strange at first due to his callas behaviour and personality. Wong is also presented as very serious and doesn't understand when Strange calls him 'Beyonce'.
Following the Ancient One's death, Stephen becomes the new sorcerer supreme and Wong is his second in command. The two have since become good friends after defeating Kaecilius and Wong trusts Strange to guard the Santorum.
In 2018, Wong and Doctor Strange learn of the warlock called Thanos, when Bruce Banner crashes into the sanctorum. Wong and Strange learn that Thanos plans to erase 50% of the universe with all six Infinity Stones, called the elemental crystals. In the sanctorum, Wong meets Iron Man and Bruce Banner and eventually Spider-Man, when Greenwich Village is attacked by Thanos' henchmen Ebony Maw and Cull Obsidian. After Iron Man is saved by Wong, he invites him as a guest to his wedding and after Thanos snaps his fingers, Wong is one of the people who survives the snap, while Doctor Strange disintegrates. During this time, Wong is appointed the new sorcerer supreme for the next five years.
After Bruce Banner uses a gauntlet and brings the vanished victims of Thanos' snap back to life, five years later, Wong joins the Battle of Earth alongside the restored Avengers, including Doctor Strange. Wong brings every single superhero/superheroine to the Avengers Compound through portals, where the battle against Thanos and his army takes place. Wong later attends the funeral of Tony Stark who gave his life by snapping Thanos and his army out of existence. Wong soon after, returns to Kamar Taj to resume his duties as Sorcerer Supreme.
Wong appears in the episode "What If... Doctor Strange Lost His Heart Instead of His Hands?", where he meets Stephen Strange, who is mourning the loss of his girlfriend Christine Palmer, who is killed in a car accident. Two years later, Wong tries to help Stephen on the anniversary of Christine's death. Wong eventually learns that Strange is using the time stone to reverse the untimely event and to save Christine, but the universe is eventually destroyed, resulting in Wong's demise.
Another version of Wong appears in "What If... Zombies!?", where he has contracted a zombie virus from the quantum realm along with Doctor Strange, Iron Man and other Avengers. Wong is soon killed by the cloak of levitation decapitating him on the spot.
Since Wong survived Thanos' snap, he is now the new Sorcerer Supreme following Doctor Strange having blipped for five years between the events of Avengers: Infinity War and Avengers: Endgame. While Wong has a minor role in this movie, his memories of knowing Peter Parker is Spider-Man, are erased like the rest of the world, when Doctor Strange casts a spell for everyone in the world to forget who Peter Parker is.
In 2024, Wong is informed of an attack in New York City so uses a sling ring to travel there, where he assists Doctor Strange in fighting Gigantos, who is yet to accept Wong as his boss and Sorcerer Supreme. They meet a teenage girl named America Chavez, whom they learn has the ability to travel the multiverse. When speaking to Chavez, they also learn that an alternate Doctor Strange tried to reach the Book of Vishanti with Chavez, which Wong is aware of, while Strange believes it is just a myth, but in reality, it is real and it is something that the Sorcerer Supreme must learn about. Wong also comments on the fact that Strange attended the wedding of his ex-girlfriend, Christine Palmer.
When Wong and Strange take America to Kamar Taj to keep her safe and realise the monsters are being created by witchcraft, so Doctor Strange visits Wanda Maximoff for help, only to learn she has been consumed by the Darkhold magic and officially become the Scarlet Witch. Wong informs the sorcerers of the powers the Scarlet Witch possesses and that she is prophised to conqoer the multiverse and can rewrite realities as she wishes. The sorcerers try their best to protect Karmar Taj from Wanda as she threatens to take lives for Wong and Strange not handing America Chavez to her by sundown. Wanda attacks the location and many people are killed. When Doctor Strange and America travel through the multiverse, Wanda forces Wong to take her to Mont Wondergore, where the real Darkhold is kept, as the one she has been using is a copy.
The Scarlet Witch keeps Wong at Wondercore while trying to access other worlds. Wong tries to reason with Wanda by asking if knowing there are universes where she is with her sons is enough, which she declines and sends him over the edge of the mountain, but he manages to save himself with magic. Later in the film, Wong is still at Mount Wondercore, where Wanda brings America. Wong then witnesses Doctor strange possessing the body of his dead counterpart, much to dislike as he doesn't even want to know about it. Realising there is only one way to defeat the Scarlet Witch, Wong tells Strange he has no choice but to take America's power, which Strange is hesitate to do, but America tearfully tells him it's okay, she understands now. However, Strange doesn't take America's power, but instead convinces her to control her powers and has faith that she can defeat Wanda with her powers.
America is able to open a portal to earth-838, where the Scarlet Witch scares the alternate versions of her sons and faces her 838 counterpart. Realising what she has become, Wanda destroys the Darkhold in every universe, while Wong and America watch Wanda die from the destruction of the Darkhold and Mount Wondercore collapsing. America frees Wong and they return to Karma Taj along with finding the universe in which Doctor Strange has been trapped in with Christine Palmer from earth-838. Wong and the sorcerers are later seen training along with America, in the rebuilt Karma-Taj Wong asks Strange how he is feeling because he used the Darkhold to walk into his own corpse, which Strange says he is okay. Finally accepting Wong as his boss, Strange bows to him, which Wong appreciates.
Doctor Strange referred to Wong as "Beyoncé", which is a reference to Beyoncé Knowles. This might also be due to the fact that Wong was heard listening to Beyonce's hit song "Single Ladies" in the film.
He shares his name with his portrayer Benedict Wong.
Wong believes there's an alternate version of himself having hair and wearing a ponytail.
Wong and America Chavez are the only main characters in Doctor Strange in the Multiverse of Madness whose alternate self is not featured in the film. However, America does mention that no other universe has a version of her, because she never dreams, whereas there is no explanation for Wong, other than Sinister Strange mentioning he is the only person left in his universe, which implies that a version of Wong did exist in that world.