Be The Final Boss Unit Tier List: Best Units, Upgrade Priority, and Progression Guide!

Building the right team is the key to progressing quickly in Be The Final Boss. While it may be tempting to summon every powerful-looking character, not every unit is worth investing your resources into. Since upgrades become increasingly expensive, choosing the right DPS, tank, and support units can save you a tremendous amount of grinding. This guide ranks the best units in Be The Final Boss, explains which characters deserve your resources, and outlines the ideal progression path from the early game to the endgame.

How This Tier List Is Ranked

Each unit is evaluated based on several important factors instead of raw stats alone. A unit with slightly lower damage can still outperform stronger alternatives if it’s significantly cheaper to obtain and upgrade. The rankings consider:

• Damage per second (DPS)
• Tanking potential
• Support utility
• Deployment cost
• Upgrade costs
• Early-game value
• Endgame performance
• Resource efficiency

Because upgrade materials become much harder to acquire later, efficient units often provide better overall value than expensive high-rarity characters.

Best Early-Game Progression Path

Rather than upgrading multiple characters at once, focus your resources on one damage dealer and one tank. This strategy provides the fastest progression while minimizing wasted materials.

A recommended upgrade path is:

• Demonic Skeleton Archer + Demonic Bone Guard
• Demonic Skeleton Archer + Demonic Mighty Orc
• Demonic Hellfire Warlock + Demonic Mighty Orc
• Demonic Demon Lord + Demonic Skull King

Support units generally don’t require expensive upgrades to remain effective, allowing you to save resources for your primary frontline and damage dealer.

S Tier: Best Units in Be The Final Boss

These units dominate endgame content and are worth investing in once you can obtain them.

Skull King

Role: Guard

Skull King is widely considered the strongest tank currently available. With extremely high health, reliable healing, and excellent defensive abilities, this unit can survive encounters that overwhelm nearly every other frontline character.

Strengths include:

• Outstanding survivability
• Powerful self-healing
• Reliable defensive skills
• Excellent for bosses and difficult stages

Its only drawback is the enormous investment required to unlock and fully upgrade it.

Demon Lord

Role: Ranged DPS

Demon Lord is one of the highest-damage units in the game. Besides dealing exceptional ranged damage, it also weakens enemies through poison effects and area debuffs.

Advantages include:

• Extremely high sustained DPS
• Damage-over-time effects
• Enemy attack speed reduction
• Strong crowd control potential

Although expensive, Demon Lord remains one of the strongest damage dealers for late-game content.

Doomfist

Role: Melee

Doomfist combines excellent damage with self-healing, making it an outstanding off-tank.

Its benefits include:

• High burst damage
• Lifesteal
• Strong survivability
• Effective against bosses

Players tackling difficult stages often find Doomfist more reliable than traditional melee attackers.

Mighty Orc

Role: Guard

Mighty Orc serves as the bridge between early-game tanks and premium endgame options.

Reasons to prioritize Mighty Orc include:

• Automatic health regeneration
• High durability
• Powerful active skill
• Excellent boss damage

Many players continue using Mighty Orc long after unlocking higher-rarity characters because of its consistency.

Deathlock

Role: Support

Deathlock is arguably the most resource-efficient support in the game.

Unlike most units, Deathlock performs extremely well without expensive upgrades or Demonic mutations.

Its strengths include:

• Buffs nearby melee allies
• Summons Skeleton Archers
• Useful throughout the entire game
• Requires minimal investment

Even advanced players frequently keep Deathlock in their team compositions.

A Tier: Excellent Units

These characters are powerful and remain useful for a long time, although they eventually fall behind the strongest endgame units.

Bone Guard

Bone Guard is arguably the best early-game tank available.

Its defensive abilities include:

• Enemy taunts
• Damage reduction
• Protective shields
• Defensive aura

Although it lacks healing, its durability easily carries players through the early stages.

Skeleton Archer

Skeleton Archer offers incredible value considering its low cost.

Advantages include:

• Extremely cheap upgrades
• Excellent ranged damage
• Fast attack speed
• Stun effect against enemies

Many players max this unit before investing in more expensive damage dealers.

Hellfire Warlock

Hellfire Warlock specializes in ranged area damage.

Its strengths are:

• Long attack range
• Strong AoE attacks
• Effective checkpoint progression
• Reliable wave clearing

While not the best farming unit, it performs exceptionally well during difficult stages.

Lava Imp

Lava Imp focuses on burning enemies over time.

Benefits include:

• Strong sustained damage
• Damage-over-time effects
• Excellent mid-game DPS

However, Skeleton Archer generally offers better value earlier because it’s much easier to upgrade.

Barbarian

Barbarian is an affordable melee option that performs surprisingly well despite its lower rarity.

Advantages include:

• Solid survivability
• High single-target damage
• Easier upgrades than Mythic alternatives

It remains a respectable choice until stronger melee units become available.

Demon Butcher

Demon Butcher combines offensive and defensive abilities through lifesteal and damage mitigation.

Although effective, it doesn’t offer enough improvement over cheaper alternatives to justify prioritizing it early.

B Tier: Situational Units

These units are useful during certain stages of progression but are eventually replaced.

Grave Warlock

Grave Warlock provides respectable area damage but loses out to Lava Imp in overall progression.

Iron Skeleton

Iron Skeleton offers decent defensive abilities and self-healing, making it serviceable until stronger tanks become available.

Blood Gargoyle

Blood Gargoyle can absorb significant punishment thanks to its high health pool.

However, its healing only activates after taking damage, making it much less reliable than Mighty Orc.

Soul Collector

Soul Collector provides moderate buffs and scaling damage, but other support characters generally contribute more to your team.

C Tier: Units to Avoid

These units are generally not worth investing resources into unless you’re experimenting or filling temporary roster gaps.

Characters in this tier include:

• Tomb Hound
• Imp Bomber
• Necromancer
• Cursed Acolyte
• Bone Grunt

Most of these units suffer from poor damage efficiency, weak abilities, or simply being outclassed by cheaper alternatives.

Best Units to Upgrade First

If you’re starting a fresh account, prioritize these characters before investing elsewhere.

Best DPS

• Skeleton Archer
• Hellfire Warlock
• Demon Lord

Best Tanks

• Bone Guard
• Mighty Orc
• Skull King

Best Support

• Deathlock

This combination offers excellent progression while keeping upgrade costs manageable.

Which Mutation Should You Choose?

Units can appear with different mutations that increase their overall power. Current mutation bonuses include:

• Normal — Standard stats and upgrade costs.
• Shiny — Better stats but significantly higher purchase costs.
• Cursed — Strong early-game scaling with moderate investment.
• Demonic — Highest overall stats and strongest long-term performance.

Building an efficient roster in Be The Final Boss is less about collecting every character and more about investing in the right ones. Early-game standouts like Skeleton Archer and Bone Guard offer incredible value, while Mighty Orc, Deathlock, Demon Lord, and Skull King become the foundation of powerful endgame teams.

If you’re unsure where to spend your resources, stick to a simple strategy: invest in one reliable tank, one high-damage dealer, and a strong support unit. Following this upgrade path will help you clear stages faster, conserve valuable materials, and prepare your roster for the toughest content the game has to offer.