Riku (Earth-101001)

Riku (リク) is one of the main characters in the Kingdom Hearts anime series. He lives on Destiny Islands with his best friends, Sora and Kairi, and all three of them dream of venturing from Destiny Islands to find out what worlds are out there.

Appearance
Riku is a teenage boy with silver hair with bangs, pale skin, bright blue-green eyes, and a slightly muscular build. Since he is a year older than Sora and Kairi, Riku is the tallest of the trio. Riku's hair was originally shoulder-length, but, his hair has grown longer until it reaches his upper back, he cut it short to the length it was when he was a child. Much like Sora, while his general appearance does not change much throughout the series, Riku receives several costumes and form changes during the course of his adventures.

Personality
Riku's personality is as strong as the land for which he was named. He is very strong-willed and confident, at times being arrogant. He values his friends deeply and puts protecting them above all else.

Riku is extremely competitive and spent his childhood playing games, play-fighting, and racing with Sora. This competitiveness also made him easy to become jealous, especially during season 1, where he becomes very irked that Sora received the powers of the Keyblade while he did not, though he is not immediately vocal about it. This jealousy led him to behave aggressively to the people most important to him, and he began to act recklessly and harshly in an attempt to prove himself. He loses this childish jealousy streak entirely as he grows older.

He has a had an intense curiosity about the world he lives in (and what lies beyond it) ever since he met the foreign Terra as a child. His desire to know more became to consume him somewhat negatively over time. He has no qualms with going through the unknown to earn this knowledge, willingly stepping into a dark portal with an unknown destination, simply because he knew it may be his only chance to leave. After he does finally see other worlds, this desire subsides, and he finds comfort in his once-restricting island homeworld.

After the events of season 1, Riku becomes more humble, learning from the reckless mistakes he had made and seeks to make amends. He becomes much more affable and mellows out. He has learned well from his mistakes in siding with darkness and becomes wise and well-versed enough to become a Keyblade Master that Yen Sid can rely on.

Childhood
When Terra visits Destiny Islands, he can already sense Riku's potential and asks why Riku wants to leave his island. Riku tells Terra that someone else left the island long ago, and visited other worlds. Riku states that he would like to leave his world too in order to become strong enough to protect his friends and everything else he holds dear. During their conversation, Terra sees a vision of a white-haired man who then transforms into Riku's future self. This convinces him to choose Riku as his successor and lets Riku hold his Keyblade to test his strength. He convinces Riku to keep their conversation a secret to preserve the world order.

He and Sora later encounter Aqua, who finds their friendship similar to that of hers, Terra's and Ven's, and asks Sora to protect Riku if he ever loses his path.

Sometime afterwards, Riku and Sora are resting on a beach under a starry sky at night. When they are ready to go home, Riku sees Sora's sudden tear of sadness and says that perhaps someone from another world is feeling sad somewhere and suggests that Sora try and reach out to him. After Sora reaches out to Ventus, they both look up at the starry sky.

One night, there is a meteor shower and Kairi appears on the islands from Radiant Garden, another world far off from Destiny Islands. Riku, Sora, and Kairi quickly forge a powerful friendship. Soon after Kairi's arrival, Riku and Sora go to the secret place, a small cave that they frequently explored. While there, the two spot a mysterious door, though neither one can find a way to open it. The two decide to leave, but Riku manages to get a glimpse of Destiny Islands' Keyhole.

Kingdom Hearts
Riku, Sora, and Kairi continued to live on the Destiny Islands together. The three work together to construct a raft and gather supplies so that they can set out and search for other outside worlds. While Riku and Sora continue their rivalry, Riku takes jabs at Sora over his relationship with Kairi, telling him that if Sora does not share a Paopu Fruit with Kairi soon, he will.

On the night before their journey, Riku opens the door in the secret place and the Heartless invade the islands. Kairi and Sora each set out for the island to make sure their raft is safe. Sora finds Riku who remarks that the door has opened and this is likely their only chance to visit other worlds. Despite that they may never return to their island and see their parents again, Riku is motivated to not let fear stop him. Darkness surrounds the two, and while Riku disappears into it, Sora gains the Keyblade.

Riku eventually ends up in Hollow Bastion via the Corridor of Darkness, separated from his friends. There, he is found by Maleficent, and she offers him shelter and protection, giving him a bedroom with a desk and a bookshelf. In exchange for Riku's cooperation in gathering the Princesses of Heart, Maleficent agrees to find Kairi and bring her to him. During this time, Riku comes to possess a blade of darkness called Soul Eater.

Riku comes across Sora in Shibuya. He takes possession of Sora's Keyblade for a few moments before giving it back to Sora, much to Sora's surprise, and then he suddenly leaves. Watching Sora from a distance, Maleficent turns Riku against Sora, telling him that Sora has abandoned him and Kairi for traveling with the Fusion Tenders. However, Riku is still highly suspicious of her motives, even after she claims she feels Riku is like a son to her and she only wants him to be happy.

During the Tenders and Aladdin's fight with Jafar in Rub' al Khali, Riku takes Jasmine to Hollow Bastion under Maleficent's orders. Maleficent reveals the whereabouts of Kairi's body. She claims that the only way to save Kairi, who appears to have lost her heart to the darkness, is to gain access to Kingdom Hearts.

Riku meets Sora again inside Monstro, intending to use Pinocchio to help him find a way to save Kairi's heart. However, Pinocchio is captured by the Parasite Cage, and Riku works together with Sora, Donald, and Goofy to save him. Afterwards, Riku kidnaps Pinocchio and is pursued by Sora, Donald, and Goofy into Monstro's stomach. Riku asks Sora to join him and help him rescue Kairi, but Sora refuses, knowing that Riku's methods are wrong. When the Parasite Cage returns, Riku vanishes into a Corridor of Darkness.

Maleficent bestows the power of darkness on Riku, giving him the power to command the Heartless. He then goes to Neverland, traveling on Captain Hook's ship, where Kairi's body is being kept. He appears before Sora, showing him Kairi's body. Sora warns Riku that the Heartless will eventually turn on him and devour his heart, but Riku refuses to listen and retreats after using his new powers to summon AntiSora. However, before he heads back to Hollow Bastion, he tells Captain Hook that the captured Emily is not a Princess of Heart. Riku takes Kairi and recklessly returns to Maleficent's castle via the Corridors of Darkness without a vessel, putting a strain on his heart. While he is drained from the trip, Maleficent unlocks the last of Riku's dark power.

At Hollow Bastion, Sora again meets Riku, stopping him from taking down the wounded Beast. Riku and Sora briefly talk then forcibly summons the Keyblade away from him, telling him that he was "just the delivery boy" and that Riku is the true Keyblade master. After leaving Sora with the toy sword he used on Destiny Islands, he departs, and Donald and Goofy reluctantly follow him as per The King's orders.

Sora makes his way to the foyer of the castle, with the help of Beast. Riku, taking on a new appearance with the increasing strength of his dark powers, tells him to quit, but Sora refuses to leave without Kairi. Riku, intending to prove to Sora that he is the strongest of the two, attacks his old friend, but Donald and Goofy go to Sora's aid, finding themselves unable to betray Sora after all that they had been through together. With the strength of his friends, Sora reclaims the Keyblade and drives Riku to fight him.

Riku, defeated, manages to escape, but he is confused as to why Sora was able to regain the Keyblade. A cloaked figure appears to him from the Darkness, telling him that only one with a stronger heart can claim the Keyblade, and Riku's was weaker than Sora. However, the figure tells him that plunging himself into darkness will make his heart stronger. Riku does so, and he is possessed by the dark figure.

The possessed Riku then comes before Maleficent and warns her of the dangers of unlocking the Final Keyhole. When she claims not to be afraid, Riku shows a new, dark Keyblade created with six of the seven princesses' hearts. However, it doesn't react to the Keyhole. Realizing it is still needing Kairi's heart to be complete, Maleficent heads off to handle Sora and company. After Maleficent is defeated by Sora, Riku appears with his Keyblade and explains that unlike Sora's Keyblade, this Keyblade possesses the ability to unlock a person's heart, and Riku demonstrates this by piercing Maleficent's chest, allowing the immense darkness that is attracted to her to overtake her heart, transforming her into a giant dragon. When Maleficent is defeated again, he reappears, commenting on how Maleficent was being used by the Heartless from the start before disappearing again.

Riku, declaring himself to be Ansem, the Seeker of Darkness, confronts Sora in the Grand Hall and reveals that Sora has Kairi's heart in his body. While Donald and Goofy look on, Riku and Sora clash again, with Ansem's presence amplifying Riku's dark powers. He fades away when he is defeated, but after Sora impales himself with the Keyblade to release Kairi's heart and disappears, Ansem reveals himself and attacks Kairi, Donald, and Goofy. Riku uses the last of his strength to hold back his possessor and yells to the others to run. After they leave, Riku and Ansem are pulled into the darkness coming from the Final Keyhole.

A newly restored Sora, along with Donald and Goofy, eventually make their way to the End of the World. There, in the remnants of Destiny Islands, they once again confront Ansem, who has full control of Riku's body and defeat him after a series of battles at the Door to Darkness.

After Ansem's defeat, Riku is restored in the Realm of Darkness but is quickly targeted by a massive swarm of Heartless. Fortunately, Aqua and Mickey spot him, and Aqua uses her Keyblade to restrain the Heartless, unobserved by the boy, allowing Mickey and Riku to escape.

The pair makes it to the Door to Darkness, but are unable to cross through the door themselves, as they are not from the Realm of Darkness. They aid Sora in closing it to prevent a horde of Heartless from crossing through, but not before Riku tells Sora to take care of Kairi. This leaves the pair trapped in the Realm of Darkness, looking for another way out.

Kingdom Hearts: Next Generations
In three years, Riku then spends his time countering the Organization at every chance he gets, as well as keeping a watchful eye on Sora.

Later, Axel tries to kidnap Kairi in an attempt to use her to turn Sora into a Heartless so Roxas would be reborn. However, Riku rescues Kairi by opening a Corridor of Darkness, and takes her to Twilight Town, where she meets Hayner, Pence, and Olette, but never reveals his identity. At the battle for Hollow Bastion, Sora, Donald, and Goofy end up in an empty realm, where Riku arrives. He says nothing to them, and only leaves the trio a box that contains sea-salt ice cream and a picture of Roxas, Hayner, Pence, and Olette in front of the haunted mansion before immediately departing.

Riku also arrives at The Land of Dragons, trying to warn the Emperor of a Heartless dragon that Xigbar had created. However, he ends up meeting Sora, and Sora attacks him, thinking Riku to be an Organization member. When Sora sees that Riku is wielding the Soul Eater, he begins to suspect Riku's identity. Advancing forward, Riku still goes ahead with his mission and warns the Emperor, but had to defeat Li Shang in order to do so. When Sora talks to the Emperor, the wise ruler's description of the man further cemented Sora's idea that the man he fought was Riku; though unaware of why he is wearing the coat, Sora is nonetheless relieved to know that Riku is safe.

At some point following this encounter, Riku gained the ability to transform his Soul Eater into a true Keyblade. Its appearance reflected his nature of being between light and darkness, so he gave it an appropriate name: Way to the Dawn.

Upon learning that the Organization had kidnapped Kairi to force Sora to slay Heartless for them, Riku heads to The Castle That Never Was and protects Naminé and Kairi from Saïx after Naminé has freed Kairi from her prison. To Kairi's surprise, Naminé calls Riku by name, and disappears. Though Riku attempts to depart when Saïx escapes, he is stopped by Kairi and Pluto. Kairi, excited to see Riku, removes his hood, but is met with the face of Ansem, Seeker of Darkness. Though Riku felt ashamed to be seen in the form of their old enemy, Kairi took it in stride, as she could see the real Riku beneath the façade.

Kairi later is attacked by Heartless in her attempt to help Sora, and saved by Riku. He then gives Kairi the Destiny's Embrace Keyblade so that she may fight. After Sora defeats Xigbar, he and Kairi reunite. Riku tries to take his leave, but Kairi stops him. She then reveals Riku's identity, and with some concentration, Sora also sees Riku underneath his dark appearance. The revelation makes Sora overjoyed to the point of tears. Riku explains that he did not want to be found, thanks to his appearance, and confirms Sora's suspicions of the clues they found - namely, the ice cream and Roxas's photo. Afterwards, he and the others make their way up the castle, defeating the remaining Organization members save for Xemnas. During this time, Riku reveals the truth about Roxas to Sora, and realizes that he never had to fight him; Roxas had left Organization XIII because he had wanted to meet Sora in the first place, and would most likely have met him either way over time.

Near the top, Riku reunites with King Mickey and DiZ, who reveals himself to actually be Ansem the Wise. Ansem is using a machine to try and encode Kingdom Hearts into data, but Xemnas confronts him, and they trade bitter words. The machine then explodes, unable to handle Kingdom Hearts, sending Ansem the Wise to the Realm of Darkness while causing countless hearts Xemnas had collected into Kingdom Hearts to rain down on the world, creating a slew of Heartless. The explosion also cleanses Riku's heart and restores Riku to his original form, though he is still remorseful. After some encouragement, Riku traverses the rest of the castle alongside Sora, abandoning his cloak and blindfold. He and the others also encounter Maleficent and Pete, who decide to hold off the hordes of Heartless that are overtaking the castle, but only so that they will eventually take the castle for their own.