Lain Valhalla

Lain Valhalla, known as Lean Walhalla (レーン・ヴァルハラ, Rēn Varuhara) in Japan, is the main antagonist of the anime/manga series, Beyblade Burst Surge. He fights with his Beyblade, Vex Lucius Mobius 2D. He is a member of the Raging Bulls, and the former student of Shu Kurenai. Following his loss to Shu, Lain evolved his Bey into Lucius Endbringer Kou Drift.

Appearance
Lain is a tall boy with pale skin, yellow eyes with thin rings, pointed incisors, magenta markings on his face, and spiked up magenta hair with lighter pink highlights.

His attire consists of a dark-blue sweatshirt with light blue markings on the front and a mint green fur collar, indigo pants, red boots with mint green collars and light-rose soles, three red-buckled violet belts on the arms and two on the thighs, a harness-like violet belt on the torso with red buckles and red studs, and a dark-red, square-cuffed fingerless glove on his left hand. When he's not Beyblading, Lain wears a black coat with four violet buttons and red-buckled straps on the chest section.

When he resonates with his Beyblade, Lain's eyes and facial markings glow. After his power increases, the light pink highlights in Lain's hair glow cyan and the belts around his arms, legs, and torso break loose.

Personality
Outside of battle, Lain appears as a calm and aloof Blader; keeping to himself and avoiding interacting with others. But, Lain's reason for becoming a Blader is to fulfill his unstoppable dangerous Flare.

Thus, his aggression made him unafraid to confront the Beyblade legends by threatening and intimidating them. He told Lui that he will fear him, told Shu that he will blast all of his Flare at him the next time they meet, and threatened Valt with ending his Beyblade career to fulfill his flare. He also tends to growl and roar in the battle to show his dangerous aggression.

Due to this, he ignored all Bladers that cannot fulfill his unstoppable dangerous Flare and shown to be downgrading towards others who he believes are incompetent; once Lain defeats someone, he loses interest in battling them again. This is shown in his tag battle with Hyuga against Aiger and Hikaru; he told Hyuga to stay out of his way, and completely disregarded Hikaru's existence during battle despite the fact that the latter attacked him. He also scolds Hyuga and refuses to use his launcher when he destroyed his, even to the point of whacking it out of his hands but using Shu's. He even shouted that all of the Bladers in the arena weak, daring more people to come and challenge him in an arena in New York. When he won the A Group Battle Royale against Silas, Dante, Lui, and Hikaru, he declared that the Legends serve no purpose and that Valt Aoi and Aiger Akabane were the only people worthy of his attention.

Due to this, he was not satisfied with himself when he hunted down Free, inspiring him to upgrade his Origin Uranus to Vex Lucius to have more power.

Due to this, he complained that Shu's training that cannot fulfill his dangerously unstoppable Flare.

Though his losses are rare, he becomes extremely angry when he does lose, threatening to come after the person who beats him, and humiliate them if he wins the next time. He did this to Aiger Akabane in Episode 14.

Like Phi and Arthur Peregrine, he revels in destroying his opponents, and wants to end Valt's career by challenging him in a threatening way.

Despite his ruthless and destructive behavior, he does show a gentler and friendlier side when around his pet hedgehog Harry, shown by him petting his quills gently.

After being defeated by Shu, Lain became annoyed and frustrated while also rejected the former’s offer to stop his destructive action and later evolved Lucius to Lucius Endbringer Kou Drift to get revenge on him, which he succeeded, although he was not satisfied after the battle as he destroyed his Beystadium in a fit of anger and frustration.

During the events of the Ultimate Tag Series,he was still aggressive against Shu and their opponents, but as they make progress, he started to get conflicted when the Hizashi brothers won all of their matches.

When they reached the semi-finals, he and Shu battled against Valt and Rantaro. He was still conflicted about himself, but seeing Shu and Valt battle made him finally get excited about Beyblade and his Flare resonated with their battle style, allowing him to make his Flare convert into Friendship Flare.

He started to appreciate his battles and even got excited when he and Shu got to fight against Hikaru and Hyuga, but they lost. This instead caused Lain to finally understand the true meaning of Beyblade and he developing a friendly rivalry with Hikaru and Hyuga.b