Bosses in Blox Fruits are tough, and version 17 brought some changes that can make them even harder. Having the right weapon to fight them isn't just a nice idea it's often the difference between a quick win and a frustrating loss. The best boss fighting weapon helps you take down powerful enemies faster, earn more rewards, and progress through the game without getting stuck.

What makes a weapon good for fighting bosses?

A boss fighting weapon isn't just about high damage numbers. Bosses have large health pools and often use powerful attacks. You need a tool that lets you deal consistent damage while staying safe. Key traits include:

  • High damage per hit or fast attack speed: You need to chip away at that big health bar efficiently.
  • Good range or mobility: Many bosses have dangerous area-of-effect attacks. Being able to hit them from a distance or dash away quickly is vital.
  • Stun or knockback effects: Some weapons can interrupt a boss's attack pattern, giving you a crucial moment to heal or reposition.

What are the top boss fighting weapons in version 17?

Based on community testing and how they perform against bosses like Don Swan or the Sea Beast, a few weapons stand out.

Close-range power: Soul Guitar

The Soul Guitar is a powerful choice for players who can get close. Its moves, especially the "Eternal Damnation" attack, deal massive damage in a short burst. This is perfect for windows where the boss is vulnerable. It does require you to be near the enemy, so good timing and dodging are necessary. You can find more about its specific stats and moves on our Soul Guitar wiki reference.

Versatile and reliable: Cursed Dual Katana

For many players, the Cursed Dual Katana (CDK) remains a top-tier option. It offers excellent mobility with its dash moves, allowing you to weave in attacks and escape quickly. The damage output is very high and consistent, making it a safe and effective pick for most boss encounters. If you're curious about how its damage scales, our page on katana damage and stats has the details.

Long-range option: Serpent Bow

If you prefer to fight from a distance, the Serpent Bow is a strong contender. Its charged shots can hit bosses from afar, letting you avoid many ground-based attacks. While its single-shot damage is great, its attack speed is slower, so patience is key.

Common mistakes when choosing a boss weapon

Many players pick a weapon for bosses based on a single factor, which can lead to a harder fight.

  • Only looking at total damage: A weapon with the highest DPS number might have terrible range or a slow attack that leaves you open to counterattacks.
  • Ignoring your own style: If you're not comfortable with close-quarters combat, a melee weapon like Soul Guitar will be risky even if it's powerful.
  • Not considering fruit synergy: Your chosen fruit can enhance a weapon. For example, a fruit that provides teleportation or shields can make a close-range weapon much safer.

How should you actually use these weapons against a boss?

Once you have a good weapon, your approach matters. Here’s a practical method.

  1. Learn the boss pattern first: Spend a minute just dodging. See when it attacks, when it pauses, and where its safe spots are.
  2. Attack during safe windows: Use your weapon's fastest or strongest move right after the boss finishes an attack animation.
  3. Keep your mobility moves ready: Always save an escape move (like a katana dash) to get out of sudden AoE attacks.
  4. Don't spam mindlessly: Button mashing often locks you into an animation you can't cancel, leaving you vulnerable.

What about fruits and weapon combos?

Your fruit ability is part of your boss fighting kit. A fruit like Venom can add damage-over-time effects that work well with any weapon, constantly draining the boss's health. It's important to know the requirements and how to get the Venom fruit if you're considering this route. Combining a strong weapon with a supportive fruit is often the best strategy.

Your next steps to get the best boss weapon

Finding these weapons takes some work. Here’s a simple checklist to follow.

  • Check your current level and money. Some top weapons, like the Cursed Dual Katana, have high level and cost requirements.
  • Decide if you prefer close-range, medium-range, or long-range combat. This narrows your search.
  • Look up the specific quest or method to obtain your chosen weapon. For exact details on how to get and upgrade the top boss fighting tools in version 17, our boss fighting weapon details page lists the steps.
  • Practice with the weapon on regular enemies before taking it to a boss. Get used to its moves and timing.