Lyon Vastia

Lyon Bastia, first introduced as Reitei Lyon, is one of three ice mages shown in the series, as well as a rival of Gray Fullbuster. He was the main antagonist of the Galuna Island arc and later appears as a member of the Lamia Scale Guild.

Personality
Lyon looks like a cold and calm mage but he can also be emotive and follow his instincts, such as during the delegates' meeting, he rushes into the woods following Natsu Dragneel.

He takes his goals and dreams too seriously, this lead him to try to reverse the freezing of the immortal demon Deliora just to try to fulfill his dream to surpass his teacher Ur.

History
It is unknown what exactly happened to Lyon's parents but when younger, he searched for the strongest mage who would make him their pupil and found Ur. Some years later, whilst walking through the ruins of a town destroyed by Deliora, he and Ur found a survivor, Gray. They took him in, much to the chagrin of Lyon, and the two trained together. When Gray ran after the demon Deliora, he and Ur followed after Gray and Lyon attempted to use the spell Iced Shell because he believed Ur was not fighting seriously. Ur quickly froze him, knocking him unconscious, but then sacrificed herself by using the spell herself, turning her body into ice, but asking Gray to "tell Lyon that I died". Presumably afterwards the two training partners went their separate ways with Lyon spending ten years gathering knowledge and recruiting comrades and then, after learning about Galuna Island, bringing the frozen Deliora to the island 3 years before the current storyline.

Galuna Island arc
Once on the island, Lyon begins the Moon Drip ritual to unfreeze the Iced Shell off of Deliora in an attempt to defeat the demon himself and surpass his teacher. Complications arise when Natsu, Lucy Heartfilia, Gray and Happy arrive at the island on an unauthorized S-Rank mission and come into confrontation with his group. Lyon takes on Gray and manages to win their first bout after becoming angry when Gray mentions that defeat Deliora is impossible as years before Ur and Lyon told him about the exact same thing about confronting Deliora in the northern continent. The next day Lyon finds that Sherry Blendi and Yuka Suzuki were defeated and faces Natsu who tilted the ruins, thus stopping the Moon Drip ritual. Their battle is interrupted by a recovered Gray. After a little talk about Ur´s true condition (eternally alive as ice) Lyon stabs Gray telling him that he already knew all of that that; these words anger the injured Gray who attacks Lyon several times. The now injured Lyon claims that he wants to save his magic for his future fight with Deliora and starts to attack Gray using his one handed ice magic but this time it's Gray who comes out the victor when Lyon's power becomes unbalanced at the height of the fight. However, the ritual is soon completed by Toby and Deliora is freed from the shell. Even so, a heavily wounded Lyon tries to take on the beast but is knocked down by Gray. Then, much to his dismay, the demon suddenly crumbles before it can attack. Realization dawns on Lyon that Deliora was  long since dead and that he can never surpass his teacher now as she defeated the demon before he could. In the end Gray and he reconcile, and Lyon considers joining a guild.

Fighting Festival arc
Lyon, along with Toby, Sherry and Yuka Suzuki, appear in a short panel watching Gray and Juvia Loxar in the Fantasia festival.

Oración Seis arc
Lyon along with Sherry now as members of Lamia Scale and part of its delegated team to fight the Dark Guild Oración Seis, after meeting up with all the members he rushes with Sherry and the others (with the exception of Jura Nekis and Ichiya Wanderlei Kotobuki) to the woodlands where they are ambushed and easily defeated by the Oración Seis. After the battle everyone notices Erza Scarlet who was poisoned and wanted her arm to be cut off which led Lyon to volunteer to do it but was stopped by Gray. Later, as they spilt up to find Wendy Marvell, Lyon, Sherry and Jura fight off an entire guild and are successful. He then leaves with Sherry as Jura senses a Oración Seis member. As he leaves, he runs into Gray who is having a motorcycle battle with Racer. Lyon jumps onto Grays bike to assist him and he reveals that he has gone back to using two hands to cast Ice Make. The two then work together, while subconsciously taking their shirts off to Racer's confusion and Sherry's fancy, to fight Racer off of his motorcycle but as he gets faster on foot, Lyon discovers his weakness. As he continues to fight and freeze Gray in a large Ice Tower, Racer battles with and nearly kills him. However, Lyon reveals that Racer doesn't run fast but slows down time around him. With this, Gray completes Lyon's plan. Sadly, Racer tries to blow him and everyone up with explosive Lacrima and with this, Lyon pushes him off a cliff and apparently sacrifices himself to save Sherry and Gray. However Lyon survives and reappears as Sherry started attacking Natsu, Gray, and Lucy. With this, he playfully insults them saying he can't die so easily like them and returns Sherry to the light. He is later seen carrying an unconscious Sherry and cheering on the Fairy Tail mages as they climb Nirvana.

Later on he aids the rest of the light team by creating a wing of Ice to fly the battleship Christina. After that he encourages Gray into the final fight against the Oracion Seis.

When the mission is complete, the entire light team goes off to Cait Shelter for recovery. Jura congratulates Lyon and Sherry for their hard work, and later Lyon strips his clothes off alongside Gray as they overhear Natsu's idea for a party. Afterwards he and his guild mates learn the sad secret of the Cait Shelter Guild and Nirvana. As each of the delegates return to their guilds, Lyon tells Gray to get rid of his stripping habit, only to have Gray point out his own indecency. Along side Eve Thylm, Happy and Lucy, he notices quite surprisingly that Sherry started arguing with Ren Akatsuki about leaving each other.

Magic and Abilities
Expert Magician: Like Gray, Lyon practices the ice magic, Ice Make. Which allows him to form any type of object from ice. Unlike Gray whose version is static (which allows him to create weapons), Lyon´s Ice Make is Living (aka Dynamic), which means most of his creations are animal familiars made from ice. However, Lyon does know some static ice-make like the sword, prison, and geyser abilities but like Gray he prefers to use the opposite of his former partner. Lyon also has been shown to have expert skills in hand-to-hand combat, overwhelming Gray by aiming for his wounds. After joining Lamia Scale Guild, he was quickly selected to do S-Class jobs. Whether this indicates that he is an S-Class Wizard or not is yet to be confirmed.

Trivia

 * Lyon and his team/friends appeared as extras in some pages during some arcs after the Galuna Island arc like in the Sorcerer magazine in chapter 104.
 * In the Oración Seis arc, he is seen stripping at the same time as Gray, which means he picked up the stripping habit from Ur as well.
 * In Anime he didn't used Ice Make: Sword to attack Grey, but an unnamed panther-like Ice Make.
 * His name is the combination of two french cities : Lyon and Bastia.
 * During the Galuna Island Arc, Lyon's helmet mirrors that of Cecil Harvey in Final Fantasy IV.
 * Lyon has his Lamia Scale stamp the same place Gray put his Fairy Tail stamp.