The White King

Alexander Frost is a talented male Duelist from the Obelisk Blue Dormitory at Neo Duel Academy, as well as one of Adrienne Guadiacco's closest friends.

In Japanese, his surname has been written as either フロスト or 降霜. His given name can be interpreted as "Defensive Cold", which may make a reference to Alexander's hostile and icy personality. He is called "Alex" regularly by others, most specifically by Adrienne Guadiacco. During the Homecoming Duel Tournament, he was also dubbed the Winter King by the Announcer and many of the spectators.

Character Design
Alexander is often described as a pale, handsome young man of seventeen with unusually cold green eyes. His usual outfit consists of the standard male Obelisk Blue blazer over a black shirt, black boots, boot cut dark blue jeans, and an optional pair of fingerless blue gloves. He has straight dark brown hair, with long, artful bangs that fall below his eyebrows in various layers. He carries an Academy-issued Duel Disk with four blue brackets representing the male Dorm on his left arm.

Character Biography
Alexander Frost, along with Adrienne Guadiacco and Lionel Reyes, is one of the elite students at the Academy, and arguably the best. He is widely regarded as the "King" of the Obelisk Blue Dorm for his remarkable Dueling talent and his extraordinary good looks. While Alexander is easily one of the most popular and admired students at the Academy, he detests relationships with most people, and is cold and hostile to the point of icy indifference. The only exception to this behavior is his friend, Adrienne Guadiacco. Alexander is also vain and manipulative, and not above using people to achieve his own ends.

The only child of the famous and wealthy Dueling entrepreneur, Gerard Frost, who helped spread Duel Monsters to Europe, Alexander conceals a deep sorrow and suffers from repeated bouts of depression. More than six years ago, he suffered a severely traumatizing experience in the snow-covered mountains near his home. After spending the night in the frozen wilderness and fighting hypothermia, Alexander made his difficult way back home, only to discover that his father had been murdered by foreign terrorist activity while on a business trip in Greece. Upon hearing the news, his mother immediately fell prostrate with grief, eventually evolving into incurable dementia. Unable to care for his mother, and devastated by his father's murder, he entered a state of deep depression for two months. During this time, his personality drastically changed, becoming far more direct and aggressive, while also coming to view others as objects rather than beings, usually calculating their value to him.

Alex places fourth in the Midterm Exam, and takes a spot as one of the Top Twelve Dueling Participants for the Homecoming Duel Tournament. He and Adrienne later discover that a mysterious young girl, Yuuki Vandrille, scored a perfect score of 500/500 on the exam. Unable to bear the thought of coming out second-best, he and Adrienne scour the Academy's computer network in an attempt to learn more about her. After their search turns up no clues, he and Adrienne seek out Hayden Omirou, a Ra Yellow student famed for his habit of keeping informational tabs on other Duelists. After convincing the wary Hayden into Dueling for the information, he brutally defeats him. From Hayden, he and Adrienne learn not only about the other competitors, but also about Yuuki Vandrille's troubled past, and the mystery of her runaway brother. Due to their rough treatment of Hayden, he and Adrienne make enemies of both Raphael Luiseruga, another Ra Yellow, and of the disgruntled Hayden.

Planning to use their newly-gained information to torture Yuuki emotionally, Alexander and Adrienne return to the Obelisk Blue Dorm, only to encounter Aurion in the guise of Mark Tanner. After a shocking and unexpected comment from the disguised Aurion, Alexander becomes extremely upset and breaks his veneer of icy composure. The false Mark's behavior prompts them to seek out another Obelisk Blue - Lionel Reyes - to defeat him in a Duel in exchange for their support in the Tournament. After Lionel successfully completes the task and shares his findings, he and Adrienne break their end of the bargain, and refuse to help him, resulting in yet another enemy.

Alexander's first opponent in the Tournament is Adam Danes, a brutal and well-known Pro Leaguer. He quickly dispels any illusions about his talent, and defeats Danes unscathed in a single turn. He and Adrienne later encounter a mysterious masked man who seems to know Adrienne; not too long afterward, the duo accidentally meets Lucien Lachance, who reveals his true nature as the Dark Brotherhood's leader. Lachance offers them a sinister proposal to join the Brotherhood, claiming that the two of them have the makings of true greatness. Disdainful, Alexander helps convince Adrienne to refuse his offer, only to be sent into a blind rage when Lucien reveals that he murdered Alexander's father, Gerard Frost, personally. Both Alexander and Adrienne swear to find Lucien again and make him pay for actions, no matter the cost.

His next opponent is Lucas Lorry, a confident and cheerful member of the Slifer Red Dorm. After a heated Duel, Alexander is successful and wins the match. His success is short-lived, however, as the Brotherhood launches a frightening public demonstration, causing many of the Tournament's participants to withdraw with concerns for their own safety. Due to this, Adrienne Guadiacco wins her planned match against Hayden Omirou by default, and is sent directly to the Semi-Final Rounds. To his obvious discomfort, Alexander learns that his next opponent is to be Adrienne, his one true friend. Despite the unfortunate turn of events, Alexander promises that he will devote his full ability to their match, while Adrienne does the same.

Deck
Alexander plays an Ice Counter Deck, formed after a traumatizing experience in the snow-covered mountains near his home. His Deck centers on the placement and distribution of Ice Counters among monsters on the field, including a few of his own cards who benefit from having them. Through the removal of these Ice Counters, Alexander gains access to a wide variety of tactics during a Duel, ranging from the negation of card effects to the immobilization and destruction of opposing monsters.