"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.

In the remake version when the player controls Dias during random battles, Dias can slash his opponent three times.

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 Icon Rena Lanford Icon Celine Jules Icon Dias Flac Icon Ashton Anchors Icon Precis F. Neumann Icon Welch Vineyard Icon
Claude C. Kenny
Rena Lanford
Celine Jules
Dias Flac
Ashton Anchors
Precis F. Neumann
Welch Vineyard
Bowman Jeane Icon Opera Vectra Icon Leon D.S. Gehste Icon Ernest Raviede Icon Chisato Madison Icon Noel Chandler Icon
Bowman Jeane
Opera Vectra
Leon D.S. Gehste
Ernest Raviede
Chisato Madison
Noel Chandler
Non-Playable Characters
Admiral Ronyx Icon Westa Icon Allen Icon King of Krosse Icon Philia Icon Star Ocean Icon King of Lacuer Icon
Ronyx J. Kenny
King of Krosse
King of Lacuer
Cynne Icon Nall Icon Star Ocean Icon Star Ocean Icon Star Ocean Icon Star Ocean Icon
Ten Wise Men
Gabriel Icon
Lucifer Icon
Haniel Icon
Michael Icon
Raphael Icon
Camael Icon
Zadkiel Icon
Metatron Icon
Jophiel Icon
Zaphkiel Icon
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
Precis F. Neumann BS Icon Leon D.S. Gehste BS Icon Celine Jules BS Icon Dias Flac BS Icon Ashton Anchors BS Icon Bowman Jeane Icon Chisato Madison BS Icon
Precis F. Neumann
Leon D.S. Gehste
Celine Jules
Dias Flac
Ashton Anchors
Bowman Jeane
Chisato Madison
Noel Chandler Icon Ernest Raviede Icon Opera Vectra BS Icon Rena Lanford BS Icon Claude C. Kenny BS Icon
Noel Chandler
Ernest Raviede
Opera Vectra
Rena Lanford
Claude C. Kenny
Non-Playable Characters
Rival Icon Mother Edifice Icon
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
Andre Icon
Angelica Icon
Bernard Icon
Boris Icon
Catalina Icon
Claire Icon
Dominique Icon
Eleanore Icon
Evelysse Icon
Gideon Icon
Haru Icon
Heinrich Icon
Koro Icon
Mafia Steve Icon
Mafia K. Steve
Marcel Icon
Pamela Icon
Regnie Icon
Rochelle Icon
Seth Icon
Sidonius Icon
Verda Icon
Verda Clayman
Winnie Icon
Yuichi Icon
Yuichi Oakveil
Twin Eclipse
Ewen Icon
Tika Icon
Recolo Icon
Caleen Icon
Masked Man Icon
Yrian Luxter
Tika Blunche
Caleen Keemosn
Masked Man
First Departure
Roddick Farrence Icon
Millie Chliette Icon
Ronyx J. Kenny Icon
Ilia Silvestri Icon
Cyuss Warren Icon
Phia Melle Icon
Mavelle Froesson Icon
Roddick Farrence
Millie Chliette
Ronyx J. Kenny
Ilia Silvestri
Cyuss Warren
Phia Melle
Mavelle Froesson
Pericci Icon
Second Evolution
Claude C. Kenny Icon
Rena Lanford Icon
Celine Jules Icon
Dias Flac Icon
Ashton Anchors Icon
Precis F. Neumann Icon
Opera Vectra Icon
Claude C. Kenny
Rena Lanford
Celine Jules
Dias Flac
Ashton Anchors
Precis F. Neumann
Opera Vectra
Leon D.S. Gehste Icon
Chisato Madison Icon
Michael Icon
Lucifer Icon
Leon D.S. Gehste
Chisato Madison
Till the End of Time
Fayt Leingod Icon
Sophia Icon
Cliff Icon
Nel Icon
Maria Icon
Albel Icon
Mirage Icon
Fayt Leingod
Sophia Esteed
Cliff Fittir
Nel Zelpher
Maria Traydor
Albel Nox
Mirage Koas
Welch Vineyard Icon
Clair Icon
Tynave Icon
Farleen Icon
Welch Vineyard
Clair Lasbard
The Last Hope
Edge Icon
Reimi Icon
Faize Icon
Lymle Icon
Meracle Icon
Myuria Icon
Sarah Icon
Edge Maverick
Reimi Saionji
Faize Sheifa Beleth
Lymle Lemuri Phi
Meracle Chamlotte
Myuria Tionysus
Sarah Jerand
Stephen Icon
Crowe Icon
Eleyna Icon
Amina Icon
Milla Icon
Shimada Icon
Stephen D. Kenny
Crowe F. Almedio
Eleyna Farrence
Milla Bachtein
Deputy Director Shimada
Integrity and Faithlessness
Fidel Icon
Miki Icon
Victor Icon
Fiore Icon
Anne Icon
Emmerson Icon
Relia Icon
Fidel Camuze
Miki Sauvester
Victor Oakville
Fiore Brunelli
Anne Patriceani
Emmerson T. Kenny
Ted Icon
Gunter Icon
Hana Icon
Daril Icon
Tiffan Icon
Raffine Icon
Pavine Icon
Daril Camuze
Tiffan Delacroix
Final Fantasy
Rain Icon
Lasswell Icon
Fina Icon
Infinite Undiscovery
Aya Icon
Capell Icon
Sigmund Icon
2B Icon
9S Icon
A2 Icon
Resonance of Fate
Leanne Icon
Vashyron Icon
Zephyr Icon
Valkyrie Profile
Lenneth Icon
Silmeria Icon
Hrist Icon
Freya Icon
Lezard Icon
Arngrim Icon
Mystina Icon
Lenneth Valkyrie
Silmeria Valkyrie
Hrist Valkyrie
Lezard Valeth
Boss List
Anamnesis Administered Gear - Ballistic Rhino - Beast Monarch - Cannon Daddy - Colossal Beak - Crown Dodo - Facula Dragon - Frost Tree - Hell Siren - Hound Vermillion - Josephine - Knight Exile - Luin D'Mont - Mother Polyphaga - Mother Virus Pod - Mountain Matango - Predate Queen - Pumpkin Tree - Rambert the Ogre - Shine Totem - Shrouded Gaze - Tall Prisma
First Departure Jie Revorse
Second Evolution Lucifer - Michael
Till the End of Time High Executioner - Luther Lansfeld
The Last Hope Armaros Manifest - Prehistoric Psynard
Integrity and Faithlessness General Alma
Final Fantasy
Infinite Undiscovery
Resonance of Fate Champ Pater
Valkyrie Profile Blood Valkyrie - Lezard Valeth
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