Best Units in Be the Final Boss (Unit Tier List & Team Guide)

Choosing the right units is one of the most important parts of progressing in Be the Final Boss. While upgrading your Skill Tree and farming resources are essential, your army ultimately determines how well your castle can withstand increasingly difficult hero waves.

Some monsters excel at dealing raw damage, while others provide powerful passive abilities that can clear multiple enemies or apply damage-over-time effects. Building a balanced team with strong synergy is often more effective than simply using the units with the highest Power. This guide covers the best units in Be the Final Boss, which monsters are worth investing in, and how to build the strongest defensive lineup.

1. Mighty Orc – Best Overall Unit

If you’re fortunate enough to obtain the Mighty Orc, it should become the centerpiece of your team. It’s widely considered one of the strongest Mythic units currently available thanks to its impressive damage output and reliable performance throughout nearly every stage of the game.

Unlike many units that shine only in specific situations, the Mighty Orc remains useful from the early game all the way into tougher waves. Because of its excellent overall stats, it’s also one of the safest units to spend your upgrade materials and Fusion Shards on.

Strengths:

• Excellent overall damage
• Strong late-game performance
• Great investment for upgrades
• Reliable in nearly every battle

2. Great Warlock

The Great Warlock is another excellent unit thanks to its powerful abilities and solid battlefield presence. Although it requires two deployment slots, its overall value makes the additional space worthwhile.

Since larger units occupy more of your available capacity, you’ll need to balance the rest of your lineup carefully, but the Great Warlock can easily justify the extra cost.

Best For:

• Mid to late-game teams
• High-damage compositions
• Players with additional deployment slots

3. Cursed Acolyte

The Cursed Acolyte is another strong option that occupies two unit slots.

Its strength comes from combining respectable stats with useful passive abilities, making it a valuable addition to many team compositions. As your Skill Tree unlocks additional deployment capacity, fitting larger units like the Cursed Acolyte becomes much easier.

4. Lava Imp

Although the Lava Imp isn’t necessarily the highest rarity unit, its passive ability makes it surprisingly effective.

Its attacks can ignite enemies, applying burn damage over several seconds while also dealing additional damage through its active ability. This allows it to slowly wear down groups of heroes instead of relying solely on direct attacks.

Lava Imp works particularly well alongside other area-damage monsters.

Advantages:

• Damage over time
• Excellent crowd control
• Strong against large enemy groups

5. Bone Grunt (Mutated)

The Bone Grunt demonstrates why mutations are often more important than rarity.

For example:

• Normal Bone Grunt
• Cursed Bone Grunt

Even at the same level, the mutated version usually deals considerably more damage because of its additional bonuses.

If you own multiple copies of the same unit, always compare their mutations before deciding which one to keep.

Tips and Tricks to Win More Games in Be the Boss

1. Prioritize Units With Strong Passives

Every unit in Be the Final Boss comes with a passive ability that can significantly affect your team’s performance. Some passives include:

• Burning nearby enemies
• Area-of-effect attacks
• Damage-over-time effects
• Energy-based abilities
• Multi-target attacks

Rather than selecting monsters based only on their Power rating, consider how their passives complement each other. A well-balanced team with strong synergy often outperforms a lineup built entirely around raw stats.

2. Should You Always Use the Highest Power Unit?

Not necessarily. Power is a useful indicator of overall strength, but passive abilities and team synergy are just as important. For example, replacing a lower-Power support unit with a slightly stronger attacker may actually reduce your team’s overall effectiveness if you lose valuable crowd control or burn effects. Whenever you summon a new monster, compare:

• Overall Power
• Passive ability
• Deployment cost
• Team synergy
• Mutation bonuses

This approach helps you build a more efficient defensive lineup.

3. Upgrade Your Best Units First

Resources such as Shards and Fusion Shards become increasingly valuable as you progress. Instead of upgrading every monster equally, concentrate your resources on the units you use most frequently. Prioritize:

1. Mighty Orc
2. Mutated units
3. Great Warlock
4. Cursed Acolyte
5. Strong support units with useful passives

This strategy provides much larger power gains than spreading upgrades across your entire collection.

4. Build a Balanced Team

A strong army isn’t made up entirely of your highest-rarity monsters. Try to include units that fill different roles, including:

• Main damage dealers
• Area-of-effect attackers
• Damage-over-time specialists
• Strong passive support units

As your collection grows, don’t hesitate to replace older monsters with stronger ones that better complement your current lineup.

While the Mighty Orc currently stands out as the best overall unit in Be the Final Boss, building a powerful team is about more than simply collecting the highest-rarity monsters. Units like the Great Warlock, Cursed Acolyte, Lava Imp, and mutated variants can all play important roles depending on their passive abilities and how well they work together. Regularly upgrading your strongest units, replacing weaker monsters, and prioritizing mutations over duplicates will help you create a defensive lineup capable of surviving even the toughest waves of heroes.