Vali Lucifer is the leader of the Khaos Brigade’s Vali Team. He is a descendant of the original Lucifer and the possessor of the Vanishing Dragon, Albion; wielding the Divine Dividing Sacred Gear. As such, he is the direct rival of Issei Hyoudou and Ddraig.
Vali was abandoned by his parents who considered him a monster and was left wandering around. It was during that time that Azazel found the boy and took him into the Underworld, where he raised and trained him.
Vali first appeared in volume 3 to defeat Kokabiel under Azazel’s orders.
He reappears in volume 4 during the peace treaty between the Three Factions before betraying Azazel and joining the Khaos Brigade. He then fought against Issei. While initially underestimating Issei due to his background, Vali became interested in Issei after Issei manages to overwhelm him despite the fact he was not using his real strength. The battle, however, was ended abruptly by the sudden appearance of Bikou who asked Vali to retreat.
Vali is a powerful fighter who wields the Longinus “Divine Dividing,” which holds the spirit of the Vanishing Dragon, the White Dragon Emperor, Albion. Divine Dividing works in the opposite way of Issei’s Boosted Gear, in which it halves the opponent’s power after coming into contact with them.
Vali can also use the opponent’s drained power and add it to himself, which contributed to the defeat of the Fallen Angel Kokabiel during his introductory chapter. He also has a Balance Breaker armor called Divine Dividing Scale Mail, which is similar to Issei’s Scale Mail aside from it being white and having Dragon wings. The Divine Dividing also has the ability to halve the size of objects and living beings through the use of its “Half Dimension.”
In volume 12, Vali gains a new form called the Empireo Juggernaut Overdrive, which changes the color of his armor to silver. Like Issei’s Cardinal Crimson Promotion, it does not consume his lifespan. In this state, Vali can use an enhanced version of Half Dimension called “Compression Divider,” which halves a specific target constantly until they vanish from existence.
Aside from Divine Dividing, Vali has an impressive amount of demonic power, being a descendant of the original Lucifer. This helps him in controlling his Juggernaut Drive as he uses it as an alternative source of power instead of his lifespan; however, if used for extended periods of time, it will eventually cause him to go berserk. Vali has also shown to be extremely talented in using magic, capable of learning Norse Magic in a short period of time.
In volume 6, Vali and Bikou appear in front of Issei after Issei had just finished his usual contract with Mil-tan, warning Issei to be careful about Diodora Astaroth. He reappears along with Bikou and Arthur Pendragon, saving an unconscious Asia Argento from the Dimensional Gap and giving advice to the Occult Research Club on how to release Issei’s Juggernaut Drive. He later reveals his true purpose of being in the Underworld, which was to have a look on the True Red Dragon God Emperor, Great Red, as he reveals to Issei that his greatest desire is to defeat the Great Red and become the True White Dragon God Emperor.
In volume 7, Vali and his teammates help the Gremory Team in their battle against Loki and Fenrir, using his Juggernaut Drive to defeat Fenrir and allowing Arthur to use his Excalibur Ruler to subjugate the giant wolf.
In volume 9, Vali sends Le Fay Pendragon and Gogmagog to Kyoto to “repay” the Hero Faction for their surveillance on the Vali Team. After hearing Le Fay’s report, Vali became interested in Issei’s new power which differs from the usual Juggernaut Drive after Issei successfully persuaded two of the past possessors, but he claims that it is not his style to persuade the past possessors and that he will dominate them all instead.
In volume 11, Vali sends Kuroka, Le Fay, and Fenrir to the Hyoudou Residence as Ophis’s bodyguards, who at that time was interested to learn more about Issei. When Cao Cao and Georg attacked the Gremory Team, Vali switched places with Fenrir through a magic circle set up by Kuroka and Le Fay. During the battle, Vali, angered by Cao Cao mocking his past, attempted to activate his Juggernaut Drive but was stopped when Georg under Cao Cao’s orders used Samael’s poison on Vali, greatly weakening him.
In volume 12, Vali, still suffering from Samael’s curse, hid inside the Gremory Palace while receiving treatment from the original Sun Wukong. He later fought against Pluto, revealing his Empireo Juggernaut Overdrive after sealing all of the past possessors’ consciousness and halves Pluto into nothingness in one blast. After Issei defeats Cao Cao, Vali came to check on both on them, commenting on the fact that Cao Cao received Samael’s curse and asking why the Truth Idea didn’t work which after hearing Cao Cao explain, laughs at the latter. He tells Cao Cao the only one who can defeat Issei in his Cardinal Crimson Promotion is him. He then promptly leaves the area with his team.
In volume 14, though never showing up in person, Vali is mentioned several times, investigating extinct monsters while running into the Khaos Brigade. Near the end of volume 14, Euclid Lucifuge received a report that Vali and his team were causing trouble and sent Grendel to deal with him.