"I never stopped fighting. So I could achieve the strength to defeat anyone."
—Dias Flac
Dias Flac is one of the main characters in Star Ocean: The Second Story and its remake, Star Ocean: Second Evolution, later reappearing in Star Ocean: Blue Sphere.


Star Ocean: The Second Story/Evolution

"He was a childhood friend of Rena, but a certain incident has left a deep scar within him. Traveling in search of strength, he became a vagrant swordsman. Cool-headed and unable to trust others, his skills as a swordsman are considered to be the greatest."
—STAR OCEAN: Second Departure Official Website.

Dias was born and raised in Arlia, and is Rena's childhood friend. He thinks of Rena as his "other little sister" since she would often play with Dias's younger sister, Cecille.

Two years prior to the events of the storyline, Dias and his family were attacked by bandits. His parents and sister died, and Dias himself was badly injured, but he managed to survive. After that incident, however, his life changed: he came to believe he was somehow responsible for the death of his family, for not being able to protect them. Dias then left Arlia and travelled all over Expel, becoming a renowned swordsman.

"Call me what you will, but I don't feel like babysitting a bunch of people who will be nothing but a burden to me."
—Dias Flac.

Dias is met for the first time in Marze, when the children of Marze are held captive in the Forest of Symbols and a plan is being devised to rescue them. As it turned out, Dias was hired to attempt to rescue the children. If Rena is the chosen protagonist, Dias will join temporarily to help Rena carry out the rescue mission. After the events that unfold, Dias says to Claude that he anticipates the day their swords will cross, and he heads off again.

Dias Enters Lacour Arena

Dias enters Lacuer Arena.

Dias later reappears in Lacuer during the Lacuer Armory Contest, in which he is a participant. It is then that Dias and Claude finally face off against each other. Not surprisingly, Claude loses the fight against Dias. Nevertheless, Dias acknowledges his strength, and says he looks forward to seeing him again.

"I'm telling you, he's first-class swordsman. He'd be a huge asset to us out there!"
—Rena Lanford pleading her case to Claude Kenny and Celine Jules.

Near the end of the first half of the game, at the Lacuer Front Line Base, Dias runs into Claude and Rena once again. If Claude is the protagonist, he and Dias will ensue in a short conversation, after which Dias asks Claude to protect Rena for him, and then he leaves. If Rena is the chosen protagonist, however, the player can opt to make Dias a permanent addition to the party.

Star Ocean: Blue Sphere

Dias Blue Sphere

Dias in SD 368.

Little is known about where Dias went during the two years between the games. It is likely he reverted to his old ways of wandering the world alone, looking to better himself and his sword.

Precis manages to find him and ask him to join the cause. Dias then volunteers to join, so that he may protect them himself. He mostly joins out of duty to Rena, wanting to continue to protect her.


"Going on an adventure doesn't really change me or anything. I keep pursuing greater and greater levels of strength, and in the end, I've accomplished nothing."
—Dias to his childhood friend, Allen Tucks.

An expressionless swordsman, Dias' eyes sparkle with a cold light. He is cold, callus, and arrogantly proud. The blue-haired warrior enjoys practicing his own unique swordfighting style that he developed himself, meshing the Edarl sword style with the martial arts of Karate. Disliking bandits and robbers with a hatred born of the murders of his family, Dias enjoys simple pleasures such as food and sleep.

"He may not like dealing with others, but he causes chaos everywhere he goes regardless."
Celine Jules referring to Dias.


"Rena, I'm not some knight in shining armor. I'm not gonna kill every single monster by myself out there."
—Dias speaks with Rena prior for departing to El.

Dias uses a fighting style very similar to iaido, the Japanese sword-based martial art associated with unsheathing and re-sheathing one's sword for quick-draw-based strikes. He is often considered the most powerful character in the game, tied with Claude, Ashton and Welch. All his stats are very high (although his CON is much lower than Claude's), while also being a notably mobile character, having the second highest faster movement speed (after Chisato).

Most of his Special Arts are fast and deadly, usually with a low MP consumption, and reach their Top Proficiency fast, meaning they achieve full potential in short time; however, Dias tends to fall a bit behind in damage output compared to other fighters as many of his Arts lack high multi-hit properties. His normal ground attack has one of the highest ranges, although a slow start-up. Among his notable Arts are Air Slash, which is much faster than Claude's, being the staple of his gameplay until the end of the game; and Deadly Illusion, which is the fastest Special Art in the game.

In Second Story, the accessories Meteor Ring and Slayer Ring had no effect on Dias. This has been fixed in Second Evolution.

Special Arts

Name MP Cost Level/Item Learned Top Proficiency
Air Slash 4 0 NA
Chaos Sword 5 0 150
Crescent Cross (Cross Wave) 8 0 120
Pale Moonlight (Crescent Wave) 10 0 130
Gale Thrust 10 40 130
Moonlight Arc (Crescent Moon Flash) 13 48 100
Phoenix Drive (Hawk Scream Blast) 16 56 100
Full Moon Slash 25 63 100
Deadly Illusion (Illusion) 21 70 420
Phoenix Blast (Firebird Shock Wave) 30 78 200

Star Ocean: Anamnesis

Standard Dias Model

Availability: Gacha Permanent

Role: Defender ACE 5☆ to 6☆

Weapon: Sword & Sheathe


  • Expel's Renowned Swordsman - DEF +20% & ATK Damage taken -20% (All Allies)
  • Aloof Swordsmanship - ATK +30% & DEF +20% (Self)
  • Oath to Cecille - Will not flinch to damage under 25% Max HP (All Close Range Weapon Allies)
  • Encountered a Worthy Rival - Damage +20% (All Attackers & All Defenders)

Rush Combo: Deadly Illusion - AP Consumption -50% (Self 20 seconds) Power: ATK x 3,500% Max Hit Count: 10


  • Air Slash (Collapse) 20 AP - Power: ATK x 200% Max Hit Count: 5
  • Double Slash 20 AP - Power: ATK x 200% Max Hit Count: 2
  • Dragon Roar 29 AP - Power: ATK x 340% Max Hit Count: 2 Element: Dark
  • Diabolic Edge 29 AP - Power: ATK x 340% Max Hit Count: 5

LB 10 Level 70 Status:

  • HP: 22,155
  • ATK: 2,799
  • INT: 1,509
  • DEF: 2,867
  • HIT: 812
  • GRD: 1,036

Cherry Cloud Dias Model

Availability: Gacha Limited 3/15/2018 - 4/5/2018

Role: Shooter ACE 5☆ to 6☆

Weapon: Dagger


  • Armory Contest Winner - Will not flinch to damage under 15% Max HP (All Allies) / Agro Rate +2 (Self)
  • Cultivated Victories - Damage +40% when under agro (All Allies) / ATK & INT Damage taken -20% when under agro (All Allies)
  • Momento Ring - Damage +50% when not under agro (All Allies) / Critical Rate +20% when not under agro (All Allies)
  • Changing Heart - ATK +15% (Self) / DEF +15% (Self) / HP +30% (Self)

Rush Combo: Phoenix Blast - Single Target Damage +30% (All Allies 20 seconds) / AP Recovery Speed +50% (All Allies 20 seconds) Power: ATK x 4,000% Max Hit Count: 10 Element: Fire


  • Lightning Chain (Cherry Blossom) 16 AP - Power: ATK x 160% Max Hit Count: 9 Element: Thunder
  • Flying Guillotine (Cherry Blossom) 19 AP - Power: ATK x 310% Max Hit Count: 4
  • Dancing Sword (Cherry Blossom) 40 AP - Power: ATK x 1,300% Max Hit Count: 7
  • Phoenix Drive 20 AP - Power: ATK x 490% Max Hit Count: 2 Element: Fire

LB 10 Level 70 Status:

  • HP: 18,564
  • ATK: 2,854
  • INT: 1,523
  • DEF: 2,099
  • HIT: 1,239
  • GRD: 910

Family Tree

Dias Tree


  • Dias cannot join your party unless you've selected Rena for the playthrough.
  • Dias' favorite instrument is the Cembalo, while his favorite foods are Chicken Skewer (in Second Story) and Shish Kebab (in Second Evolution).
  • Some time during Dias' and Rena's youth, the young swordsman gave Rena a tiara made of grass as a gift.
  • In Second Evolution only, Dias can keep his Swallowblade sword after the Lacuer Armory Contest (it was originally named Sharpness in The Second Story).
  • Originally, in The Second Story, there were no PA's whatsoever that involved Dias. This has been changed in Second Evolution, where he now has new PA's added.
  • Dias' voice actor, Kyle Hebert, is also the voice actor of both Crowe F. Almedio and Arumat P. Thanatos from Star Ocean: The Last Hope.
    • Likewise, Dias in the original Star Ocean 2 shares his Japanese voice actor with Bowman Jeane.


Translations - Artists - Voice Actors
Playable Characters Claude C. Kenny - Rena Lanford - Celine Jules - Dias Flac - Ashton Anchors - Precis F. Neumann - Opera Vectra - Bowman Jeane - Leon D.S. Gehste - Ernest Raviede - Noel Chandler - Chisato Madison - Welch Vineyard
Non-Playable Characters Ronyx J. Kenny - Westa - Allen Tucks - King of Krosse - Florith - Philia - King of Lacuer - Cynne - Nall - Lavarre - Mariana - Rhima - Mirage
Ten Wise Men Gabriel - Lucifer - Haniel - Michael - Raphael - Camael - Zadkiel - Metatron - Jophiel - Zaphkiel
Earth - Expel - Energy Nede - Milokeenia - Tetragenesis
Earthling - Expellian - Fellpool - Nedian - Tetrageniot - Celestial Being - Tria
Quadratic Sphere - Lacuer Armory Contest - Psynard - Lacuer Hope - Energy Stone - Four Fields - Symbol of Annihilation
Item Creation (Specialty - Super Specialty - Talents) - Private Action (AR) - Guard - Special Arts (Proficiency) - Symbology (Spell Combination)
The Second Story OST - Arrange Album - Fantasy Megamix - Second Evolution OST - Second Evolution Arrange Album

"Start" - "Stab the Sword of Justice" - "Dynamite" - "Mighty Blow" - "Shiver" - "Theme of Rena" - "KaMiKaZe" - "Integral Body and Imperfect Soul"

Enemies - Items - Locations - Sound Collection
Blue Sphere Logo
Translations - Artists - Voice Actors
Playable Characters Claude C. Kenny - Rena Lanford - Celine Jules - Dias Flac - Ashton Anchors - Precis F. Neumann - Opera Vectra - Bowman Jeane - Leon D.S. Gehste - Ernest Raviede - Noel Chandler - Chisato Madison
Non-Playable Characters Rival - Mother Edifice
Earth - Expel - Edifice - Tetragenesis
Earthling - Edifian - Fellpool - Muah - Nedian - Tetrageniot - Celestial Being - Tria
Grand Knott
Field Action - Item Creation (Specialty - Super Specialty - Talents) - Private Action (AR) - Guard - Special Arts - Symbology
Star Ocean: Blue Sphere Arrange & Sound Trax - "Hand to Hand" - "Like the River Styx" - "Star Ocean Forever"
Enemies - Items - Locations
Translations - Artists - Voice Actors
Anamnesis Captain (Star Ocean: Anamnesis) - Ivlish - Coro - Sidonius - Verda Clayman - Andre - Heinrich - Marcel - Angelica - Gideon - Ronie - Eleonore - Catalina - Boris - Spring - Bernard - Dominic - Pamela - Rochelle - Seth - Winnie - Sydney - Clair
First Departure Roddick Farrence - Millie Chliette - Ronyx J. Kenny - Ilia Silvestri - Phia Melle - Mavelle Froesson
Second Evolution Claude C. Kenny - Rena Lanford - Celine Jules - Dias Flac - Ashton Anchors - Precis F. Neumann - Michael
Till the End of Time Fayt Leingod - Sophia Esteed - Cliff Fittir - Maria Traydor - Nel Zelpher - Albel Nox - Mirage Koas - Clair Lasbard - Farleen - Tynave - Welch Vineyard
The Last Hope Edge Maverick - Reimi Saionji - Faize Sheifa Beleth - Lymle Lemuri Phi - Meracle Chamlotte - Myuria Tionysus - Sarah Jerand - Eleyna Farrence - Milla Bachtein - Amina - Stephen D. Kenny - Deputy Director Shimada
Integrity and Faithlessness Fidel Camuze - Miki Sauvester - Victor Oakville - Fiore Brunelli - Emmerson T. Kenny - Anne Patriceani - Relia - Welch Vineyard - Ted - Hana - Gunter - Raffine - Pavine - Tiffan Delacroix - Daril Camuze
Valkyrie Profile Lenneth Valkyrie - Silmeria Valkyrie
Resonance of Fate Leanne
V-Group 2 Sub-Group 1 Content
Sub-Group 2 Content
V-Group 2 Sub-Group 1 Content
Sub-Group 2 Content
V-Group 2 Sub-Group 1 Content
Sub-Group 2 Content