Endless Ragnarok Seofon: Unlock Guide and Build Tips

Master Endless Ragnarok Seofon. Learn unlock steps, farm Supreme Weapon Essence, and build the Star Sword Sovereign.

Jul 9, 2026

Unlock the Star Sword Sovereign in Endless Ragnarok

The Endless Ragnarok expansion for has injected a massive amount of new content into the late game. Among the most exciting additions are the Eternals, an elite squad of super-powered warriors. Leading them is the Star Sword Sovereign, Seofon. If you are aiming to add the endless ragnarok seofon experience to your battle-hardened crew, you have a challenging road ahead. This comprehensive guide covers exactly how to unlock endless ragnarok seofon, the best strategies for gathering his rare materials, and what to expect from his unique playstyle.

Who Is Seofon? The Star Sword Sovereign

Before diving into the grind for endless ragnarok seofon, it is worth understanding who you are bringing to your roster. In the universe of Granblue Fantasy, the Eternals are considered the ten strongest warriors in existence, each one a flawless master of their weapon class. Seofon is the undisputed leader of this group, wielding the legendary Star Sword.

According to the official character profile from Cygames, Seofon is a swordsman of unparalleled skill who can summon powerful avatars to fight alongside him in battle. He is voiced by Alejandro Saab in English and Junichi Suwabe in Japanese, giving him a commanding and charismatic presence. Based on player experiences shared since the expansion launched, Seofon is a textbook high-skill, high-reward character. His damage potential is off the charts, but it requires careful management of his unique Avatar gauge and precise combo execution.

The ultimate goal of any farming session is to collect the resources for endless ragnarok seofon. The unlock process for the Eternals is standardized, meaning if you learn this process once, repeating it for others like Tweyen is straightforward.

Step 1: Achieve Proud Difficulty This is the primary gate. You will not see Seofon’s Crewmate Card in any shop until you have cleared the main story campaign and subsequently beaten Extreme and Maniac difficulty levels. The Knickknack Shack only stocks Eternal materials once Proud mode is active.

Step 2: Farm Supreme Weapon Essences This is the material grind that takes the most time. You need exactly three Supreme Weapon Essences to buy a single Crewmate Card.

Source Type Efficiency Recommended For
Lock Horns (Proud Quest) Direct Drop High (Consistent drop chance) Players with optimized builds
Revenant Medallions Currency Trade Medium (30 Medallions = 1 Essence) Players struggling with Behemoth
Weekly Bounty Rewards Guaranteed Low (1 per week) Everyone (passive income)

Step 3: Visit the Knickknack Shack Once you have your three essences (or the equivalent Medallions), travel to town and speak with Siero. Navigate the menu to the “Treasure Trade” category and look for the “Crewmate Cards” sub-section. Trade for Seofon’s card, then use it from your inventory to unlock the character immediately.

Resource Quantity How to Acquire
Supreme Weapon Essence 3 Lock Horns, Revenant Medallions (90x), Weekly Bounties
Crewmate Card (Seofon) 1 Knickknack Shack (Treasure Trade)
Total Estimated Time 2–4 Hours Depends on RNG and difficulty choice

Best Farming Strategies: Lock Horns vs. Medallions

The most direct way to earn Supreme Weapon Essences is the “Lock Horns” quest on Proud difficulty. This is a brutal boss encounter against a massive Behemoth. Community reports note that this fight has a significant amount of environmental hazard and error effects that can disorient unprepared teams.

“If your team isn’t strong enough, don’t worry, jump online,” one popular community guide advises. “You will always have a lot of people that can help you out, because this mission definitely has a lot of error effects going off, so it can be a bit tricky.”

Aspect Lock Horns Ruined Monsters (Mania)
Effort per Run High Medium
Time to 3 Essences ~1 hour (lucky RNG) ~3–5 hours (guaranteed)
Co-op Recommended? Yes No
Side Rewards High-Tier Sigils, Curios, Weapon Materials Gold, Low-Tier Sigils

If you are struggling with the Behemoth’s mechanics, the alternative is to farm quests that drop Revenant Medallions. These objectives are generally easier and often involve fighting Ruined Monsters. You can stack up 30 Medallions and exchange them for a single Supreme Weapon Essence. While this method takes longer, it provides a guaranteed path forward that does not rely on winning a difficult boss fight repeatedly.

Seofon Gameplay and Build Impressions

Mastering endless ragnarok seofon requires a strong understanding of his combat loop. His core identity revolves around summoning sword avatars that assist him in battle and alter his normal attack string.

  • Core Mechanic: Avatar Summoning. These projections provide passive damage and modify his standard combo finishers.
  • Strengths: Incredible burst damage, flashy crowd control, and a very high skill ceiling for min-maxers.
  • Weaknesses: He is relatively fragile and requires aggressive positioning to maximize damage output.
Slot Sigil Priority Reasoning
Offensive Tyranny Essential Massive Attack boost to scale his damage.
Offensive Stamina Essential Keeps damage high when HP is full (which good players maintain).
Offensive Critical Hit / War Elemental High Multi-hit avatars proc crits constantly.
Defensive Aegis Medium Provides survivability for melee range.
Utility Quick Cooldown High Reduces downtime on Avatar summoning skills.

Seofon vs. Tweyen: Which Eternal First?

Since unlocking both characters requires the same specific materials, you must decide wisely on your first Crewmate Card. Your choice should heavily depend on your preferred playstyle and role in co-op parties.

Attribute Seofon (Sword) Tweyen (Bow)
Playstyle Aggressive Melee DPS Safe Ranged DPS
Skill Ceiling Very High Moderate
Damage Output Peak Burst Potential Consistent Reliable Damage
Party Role Primary Damage Dealer DPS / Off-healer
Best For Experienced action gamers Players who prefer consistent gameplay

If you love technical fighters and want the highest possible ceiling for damage numbers, endless ragnarok seofon is the obvious first choice. If you want a safer option for farming materials and clearing high-level quests, Tweyen’s ranged attacks make her incredibly forgiving and valuable.

Frequently Asked Questions about Seofon in Endless Ragnarok

1. How do I unlock Seofon in Endless Ragnarok? To unlock endless ragnarok seofon, you must first reach Proud difficulty mode. After that, collect three Supreme Weapon Essences by completing the “Lock Horns” quest or by trading 90 Revenant Medallions. Take these resources to the Knickknack Shack to purchase his Crewmate Card.

2. Where is the best place to farm Supreme Weapon Essences? The most efficient location is the “Lock Horns” quest on Proud difficulty against the Behemoth. If you cannot consistently clear that fight, farming Maniac-level quests for Revenant Medallions is a reliable and steady alternative that guarantees progress.

3. Is Seofon a good character for the hardest endgame raids? Yes. Once players master his Avatar summoning mechanic, Seofon consistently ranks among the top DPS characters available in the Endless Ragnarok expansion. His high burst damage makes him ideal for the tight DPS checks found in endgame raids.

4. Can I unlock the other Eternals if I choose Seofon first? Yes. You can unlock all of the Eternals by repeating the material farming process. Crewmate Cards are purchased individually, so you are never locked out of another character. We recommend focusing on your preferred playstyle first.

Unlocking the leader of the Eternals is a major milestone in your Endless Ragnarok journey. Whether you grind out the Behemoth in “Lock Horns” or take the scenic route through Medallion farming, Seofon is a phenomenal reward for your effort. For the latest official details and updates on the game, check the Steam page or the official Cygames portal. Master the Star Sword Sovereign, and bring his immense power to your party today.