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Knight of Iron Defense

2 star costume

3 star costume

4 star costume

5 star costume

Class Knight
Role Tank
Atk Type Physical
Position Front
Grade ★★

Kasel's 'older brother'. A true knight, he is a man of steel who protects allies at the front of the battlefield. He blocks the attacks of the enemies while taking them down, earning him the reputation akin to a castle wall.


Clause is a tank with a strong, party-wide physical defense buff. He is obtained through the Hero Inn tutorial.

Pros and Cons[edit]

+ Low Cost Skills
+ Short Casting Times
+ Reliable CC
+ Powerful Speed Debuff
+ Physical Amp
+ Party P.Def Buff
- CC has Limited Range
- No Self-Healing (Like Jane/Phillop S3)



  • If you take Cut Ground [Light] for his T4 perk, Clause can practically stun-lock the enemy by himself. At max skill book enhancement, it keeps the enemy stunned for 5 secs, and the [Light] perk reduces the cooldown to 7 secs.
  • Although Shield Strike has a slight knock-back, it cannot interrupt skills.


Cut Ground Cut Ground[edit]

Mana Mana.pngMana.png 9 sec Cooldown
Leaps into the air and deals 89,289 P.DMG to enemies in range, stunning them for 3 sec.

 20 Skill Book: Beginner DMG is increased by 10%.
 60 Skill Book: Beginner DMG is increased by 15%.
120 Skill Book: Beginner Stun duration is increased by 2 sec.

Cut Ground Animation

Shield Strike Shield Strike[edit]

Mana Mana.png 8 sec Cooldown
Deals 136,104 P.DMG propotional to DEF to enemies in range and knocks them back. Hit enemies' DEF is reduced by 30%. Upon blocking an attack, skill cooldown is reduced by 0.5 sec.

 20 Skill Book: Intermediate DMG is increased by 10%.
 60 Skill Book: Intermediate DMG is increased by 15%.
120 Skill Book: Intermediate Target's Spd is reduced by 50%.

Shield Strike Animation

Guardian Shield Guardian Shield[edit]

Mana Mana.pngMana.png 12 sec Cooldown
All allies' P.DEF is increased by 16,012 for 20 sec and P.Crit Resist is increased by 30%.

 20 Skill Book: Expert DEF boost is increased by 10%.
 60 Skill Book: Expert DEF boost is increased by 15%.
120 Skill Book: Expert DEF boost is increased by 25%.

Guardian Shield Animation

Vow of Knights Vow of Knights[edit]

Passive 1 sec Cooldown
Upon blocking, deals 16,582 P.DMG to frontal enemies. Hit enemies' ATK is reduced by 20% for 8 sec. Recovers 300 mana after hitting the target.

 20 Skill Book: Master DMG is increased by 10%.
 60 Skill Book: Master DMG is increased by 15%.
120 Skill Book: Master DMG is increased by 25%.

Transcendence Perks[edit]

Transcendence 3[edit]

Cut Ground Cut Ground[edit]

[Light] Cooldown is reduced by 2 sec.
[Dark] In exchange for 1 additional Mana Cost, the skill has a 100% chance to draw the target in.

Shield Strike Shield Strike[edit]

[Light] Target takes 25% increased P.DMG for 10 sec.
[Dark] Stuns the enemy for 1 sec.

Guardian Shield Guardian Shield[edit]

[Light] DEF boost is increased by 40%.
[Dark] Receives 25% reduced P.DMG for the duration.

Vow of Knights Vow of Knights[edit]

[Light] Casting time is greatly boosted.
[Dark] Reduce an additional 10% of ATK.

Transcendence 5[edit]

Clause Clause[edit]

[Light] ATK, DEF, HP +15% / P.Block +200
[Dark] When an ally other than this hero is hit by an attack, increase all allies P.DEF by 20% and P.Crit Resist by 20%. (10 sec cooldown).

Unique Weapon[edit]

Guardian Exian
The Guardian, Exian
Star Value
Upon casting an active skill 3 times, increases P.DEF and ATK for all allies by 10% for 10 sec. ATK boost is doubled for the ally with the highest ATK.
★★ 14%
★★★ 17%
★★★★ 21%
★★★★★ 25%
  • Item introduction: A sword and shield set engraved with various Runes and infused with ancient magic. These legendary items are said to have been created eons ago by an ancient dragon named Exian, using its own scales. As one of the royal treasures of Orvel, the sword is bestowed only to the knight of the most honorable principles. Its wielder shall serve as the defender of the kingdom and its people, and the protector of life.

1st Skill Unique Treasure[edit]

Cape of Justice
Cape of Justice
Star Value
[Cut Ground] Increases P.DMG target receives by 10% for 10 sec, and recovers own Mana by 400 per every hit enemy.
★★ 14%
★★★ 17%
★★★★ 21%
★★★★★ 25%
  • Item Introduction: A ceremonial cape used in special occasions of Orvelia. Ever since it was bestowed upon Clause on the day he was knighted, it reminds Clause of his early resolutions. Whenever he wants to quit, exhausted from all the battles, Clause would bring it out and contemplate on it. Young Kasel used to watch Clause do this and dream of becoming a knight.

2nd Skill Unique Treasure[edit]

Firm Determination
Firm Determination
Star Value
[Shield Strike] Reduces P.Crit Resistance of the affected enemy by 500 and Crit Chance by 100 for 10 sec.
★★ 140
★★★ 170
★★★★ 210
★★★★★ 250
  • Item Introduction: Old wooden shield of the knight of the Iron Wall. It's a precious shield that Clause used when he first started training. He has since engraved the names of his deceased comrades in order to remember his determination as a guardian knight. Each time he pushes away enemies with the shield, the knight's firm determination helps him tap into power beyond his limits.

3rd Skill Unique Treasure[edit]

Guardian Knight Insignia
Guardian Knight Insignia
Star Value
[Guardian Shield] Upon activation, removes negative effects on self, and DEF boost is increased by 20%
★★ 29%
★★★ 35%
★★★★ 42%
★★★★★ 50%
  • Item introduction: Rune of the Orvel Guardian Knights. A Gold lion Rune that is given to knights when they first join the Guardian knights, along with the vow that they will give their lives to protect the kingdom. The rune from the Guardian Knights bolsters a knight's iron will and loyalty, increasing the effectiveness of the Guardian Shield.

4th Skill Unique Treasure[edit]

Star Value
[Vow of Knights] Upon activation, heals HP by 2% of Max HP, and increases own P.DEF by 20% for 5 sec.
★★ 29%
★★★ 35%
★★★★ 42%
★★★★★ 50%
  • Item Introduction: A pair of gloves that Clause cherishes the most. Young Kasel and Frey gave him these when Clause was ordained a knight during a particularly cold winter. Although it wasn't knitted perfectly, each of them knitted each piece with their initials engraved on it.

Soul Weapon[edit]

Guardian Exian
The Guardian, Exian
Cooldown Skill Activation Requirement Advancement Phase 1
Summons the Soul of The Guardian, Exian, increasing P.DEF of all allies by 70% for 12 sec. For the duration of Skill, enemies hit by a normal attack will be stunned for 1 sec. 25 sec Charges up every sec and every time self takes DMG.

This skill can be cast upon gaining 80 charges.

For the duration of Skill, normal attacks reduces the target P.DEF by 5% for 5 sec. The P.DEF Reduction effect stacks up to 7 times.
Available Use(s) Advancement Phase 2
5 Upon activation, reduces P.DMG the ally with the highest attack takes by 80% for 6 sec, and increases its ATK equal to 100% of Clause's P.DEF. This effect is irremovable.
  • Soul Weapon Story: Exian was always there with Clause, Exian saw how Clause swore to protect the ones precious to him, how he refused to be discouraged even facing loss, and how he cried in despair after losing his family. Exian has always regarded Clause's conviction and courage highly, and whenever Clause cried and directed his fury, Exian did the same. Ultimately, Exian resonated with Clause's soul and unleashed its full power. ‘Guardian knight, I shall guard you from now so that your conviction will never break!’ Exian's power, awakened through ancient magic and ironclad will, shall accompany the unbreakable knight in his journey, even if the path is perilous and twisted…



  • Clause is 20 years old.
  • Clause is 195cm (around 6'4' feet)
  • His birthday is October 22nd.
  • His constellation is Asipha the Empress.
  • He likes his new family (friends from the orphanage).
  • He dislikes causing harm to friends.
  • Clause is very much like a brother to Kasel, although they're not related by blood. They grew up in the same orphanage alongside Frey and the principal of the orphanage, Ricardo. Clause is very protective of Kasel and is consistently encouraging and cheering him on. Clause becomes a loyal knight of the kingdom of Orvelia, serving king Veroglance II and his daughter, Scarlet.
  • Clause joins Kasel temporarily before departing again. He admits to resenting goddess Lua for giving such a tough duty to Kasel.

Story Scenario when Scarlet was released:

“It’s Clause, your highness”

“You may come in”

Clause stepped into the chamber cautiously and kneeled before the princess.

“I came here right away, as you’ve called to me, your highness.”

‘Yes… I am the princess who must look after my people, and protect the nation’

“Clause, I know you just came back from the expedition and I am sorry to summon you without any notice."

I had no choice since there are too many ears around.”

“My pleasure, your highness”

“So, tell me. The truth what you saw..”

After a period of time, they did not say anything for a while. And it was Scarlet who broke the ice first.

“It is different from what I heard... So different indeed...”

“I am telling the truth, based on what I’ve experienced. Your Highness”

Clause was looking at Scarlet with his innocent and clear eyes. She couldn’t find anything but honesty in his eyes.

When she sees his innocence eyes, her weak mind becomes stronger. “You are one of the people who I can trust in this castle. I do believe in you.” Said with a bitter smile.

“Haha... How ironic… Terrible things were happening out there, but I am surrounded by a bunch of people those who only care about themselves covered with lies... I can’t say anything even if my people resent me.”

Clause shook his head without hesitating.

“That’s not true, your highness. People are looking up to you, and they trust you. No one blames you about this, your highness.”

“… So, you mean they are blaming my father, the King Veroglans II?”

“Forgive me, your highness… I didn’t mean to..”

Clause bowed his head when she asked the question.

It seemed Scarlet was hesitating to say something, but she swallowed it. ‘Orvelia… And Father… How did this happen…’ She closed her eyes… And only sound she could hear was wind blowing over her.

I’ve been taught like that since I was a little girl. True knights never ignore injustice, and never kneel before unfairness. I must be honest to myself first so that I can bear pride as a true knight.

When she opened her eyes, there was no hesitation anymore.

“Demia. Are you out there?”

And a woman answered back with a low tone from outside of the chamber.

“Yes, your highness. I Demia, Orvelia Knight is waiting for your orders.”

“Clause, Demia, as soon as I step out from this chamber, gear up for the journey.”

Clause answered with a shivering voice.

“…Your Highness, allow me to say.. Going out by yourself..?”

Scarlet answered back without hesitation.

“Yes, I will meet them in person.”

Hero's Backstory

This upright and righteous man protects Orvel as one of its knights. Many people consider him a dependable defender of Orvel, but due to his lack of interest in wealth and success, his actual rank within the order has never been very high. He grew up together with Kasel and Frey in the same orphanage, and he loves his land as the home of those precious to him. He recently volunteered to join the expedition to investigate the King's plains.


Clause Gallery

Knights Knights Aselica, Clause, Demia, Dosarta, Glenwys, Jane, Loman, Morrah, Neraxis, Phillop, Ricardo, Shakmeh, Sonia, Taily
Warriors Warriors Bernheim, Chase, Dark Lord Kasel, Gau, Hilda, Kasel, Kirze, Naila, Nicky, Priscilla, Rebel Clause, Riheet,Scarlet, Seria, Theo, Viska
Assassins Assassins Epis, Erze, Ezekiel, Fluss, Gladi, Gremory, Kibera, Laudia, Mirianne, Nia, Reina, Ripine, Roi, Tanya
Archers Archers Arch, Dimael, Estelle, Luna, Requina, Selene, Shamilla, Talisha, Yanne, Yuria, Zafir
Mechanics Mechanics Annette, Cecilia, Chrisha, Crow, Hanus, Kara, Lakrak, Miruru, Mitra, Oddy, Pansirone, Rodina
Wizards Wizards Aisha, Artemia, Cain, Cleo, Dakaris, Esker, Isolet, Lewisia, Lilia, Lorraine, Lucikiel, Maria, Nyx, Ophelia, Pavel, Veronica, Xerah
Priests Priests Baudouin, Cassandra, Evan, Fallen Frey, Frey, Juno, Kaulah, Laias, Lavril, Leo, Lucias, May, Mediana, Rephy, Rehartna, Shea