Kingdom Rush 6 bosses

Six bosses, one every few stages, ending with Vez’nan at his tower. Here is what each one brings, in the order you meet them.

Gor'Thok, stage 8
J.T., stage 10
Sarelgaz, stage 11
Moglok-Hai, stage 13
Lord Blackburn, stage 15
Vez'nan, stage 18

Gor'Thok

Where: Stage 8, Fortress of Acaroth (Campaign and Classic Rush)
Health: 5,600 Casual · 7,200 Normal · 8,000 Veteran · 13,000 Impossible
Armour: None
Magic resistance: None
Speed: Slow (16), 17.6 on Impossible
If it reaches the exit: All

Melee attack. Deals 120-160 physical damage to units within a radius of 75 every 1 second.
War cart. Gor'Thok shoves a war cart down the path and is unblockable while doing so. If his health drops below 70% or the cart gets close to the exit, he rams forward with the cart, becoming untargetable and immune to damage during the charge.
On foot. His cart explodes and hurls him backward along the path; afterward he continues on foot and becomes blockable.
War cry. After switching to fighting on foot, every 15 seconds he roars if at least 3 units are in range: units within a radius of 1,200 are stunned for 2 seconds, while Goblins, Orc Warriors, Orc Shamans, Orc Wildlings and Ogres deal 2x damage and move at 1.25x speed for 5 seconds.
His death ends the fight. His death kills every remaining enemy on the battlefield.

Achievement on this stage: Acaroth Still Stands!, survive the assault on acaroth fortress (60.7% of players).

J.T.

Where: Stage 10, Abominable Lair (Campaign and Classic Rush)
Health: 6,700 Casual · 8,400 Normal · 9,500 Veteran · 11,000 Impossible
Armour: None
Magic resistance: None
Speed: Slow (12), 13.2 on Impossible
If it reaches the exit: All

Eats units. Devours all units within a radius of 75 every 1 second.
Freezes nearby towers. Every 20 seconds, if any tower lies within a radius of 400, he freezes up to 4 towers in that radius for 15 seconds; tapping a frozen tower 5 times releases it, and afterward he remains motionless for 3 seconds.
Falling icicles. Each freeze triggers falling icicles: 5 clusters land on random spots and 2 land on units, with 3 icicles per cluster; every icicle deals 40-60 physical damage to units and enemies within a radius of 50.
His death ends the fight. His death kills every remaining enemy on the battlefield.

Achievement on this stage: Not Dead Yeti, defeat the abominable boss in abominable lair (48.4% of players); All You Can Eat Buffet, make the boss eat 30 enemies in abominable lair (1.7% of players).

Sarelgaz

Where: Stage 11, Frostbite Nest (Campaign and Classic Rush)
Health: 7,700 Casual · 9,000 Normal · 11,000 Veteran · 12,000 Impossible
Armour: None
Magic resistance: High (76%)
Speed: Slow (15), 16.5 on Impossible
If it reaches the exit: All

Eats units. Devours all units within a radius of 45 every 4 seconds.
Three phases. At 75% and again at 45% health, she leaps away from the battlefield; while absent her health bar disappears and she is untargetable and immune to damage, and the next batch of spider waves begins, with her returning to the path partway through. Her second phase introduces Sons of Sarelgaz, and her third introduces Spider Matriarchs.
Reaching the end. Reaching the end of her path causes the stage to be lost.
Her death ends the fight. Her death kills every enemy remaining on the battlefield.

Achievement on this stage: Forced Molting, defeat the arachnid boss in frostbite nest (41.3% of players); Protein-Rich, destroy 10 egg nests in frostbite nest (8% of players).

Moglok-Hai

Where: Stage 13, Stormcloud Halls (Campaign and Classic Rush)
Health: 9,000 Casual · 10,500 Normal · 13,000 Veteran · 17,000 Impossible
Armour: None (98% with his shield)
Magic resistance: None (98% with his shield)
Speed: Slow (13), 14.3 on Impossible
If it reaches the exit: All

Melee attack. Deals 150-250 physical damage to units within a radius of 75 every 1 second.
Jumps between paths. Once the Sunray Tower's beam stun wears off, he leaps to the stage's opposite path, regains his shield on landing, and triggers the next wave; while airborne he cannot take damage.
Strikes the Sunray Tower. As he approaches his path's end, he attacks the Sunray Tower, which breaks after 3 strikes, costing you the stage.
His death ends the fight. His death kills every remaining enemy on the battlefield.

Achievement on this stage: Shieldbreaker, defeat the troll king in stormcloud halls (33.4% of players); Sorcerer Protection Program, complete stormcloud halls without losing any sorcerers (11% of players); Burning Sun, deal 15000 damage using the sunray tower in stormcloud halls (6.2% of players).

Lord Blackburn

Where: Stage 15, Castle Blackburn (Campaign and Classic Rush)
Health: 9,000 Casual · 11,000 Normal · 12,000 Veteran · 14,000 Impossible
Armour: Medium (60%) ; 50% on Casual · 74% on Impossible
Magic resistance: None
Speed: Slow (12), 13.2 on Impossible
If it reaches the exit: All

Melee attack. Deals 175-225 true damage to units within a radius of 75 every 1.5 seconds.
Stuns nearby towers. Every 18 seconds, if any tower lies within a radius of 250, he slams the ground, stunning up to 4 towers in that radius for 4 seconds and dealing 175-225 physical damage to ground units within a radius of 100.
His death ends the fight. His death kills every remaining enemy on the battlefield.

Achievement on this stage: Game Of Crowns, successfully defend castle blackburn (26.7% of players); Three Eyes On Every Fish, fish 3 strange fishes in castle blackburn (7.8% of players).

Vez'nan

Where: Stage 18, Vez'nan's Tower (Campaign and Classic Rush)
Health: 5,666 Casual · 6,666 Normal · 7,666 Veteran · 8,666 Impossible
Armour: None
Magic resistance: None
Speed: Slow (10), 11 on Impossible
If it reaches the exit: All

Melee attack. Deals 250-350 physical damage to units within a radius of 75 every 2.2 seconds.
Three Vez'nans. Vez'nan appears in the fight as three copies, two of which are illusions. Whichever two are reduced to 0 health first turn out to be the illusions.
Illusions burst. Once an illusion's health reaches 0, it bursts, instantly killing every soldier, hero, and enemy within a radius of 200 (bosses and summons immune to instant kills survive), and a Demon Lord takes its place.
Illusions lock towers. Every 15 seconds, an illusion locks 2 towers within a radius of 300; tapping a locked tower 3 times (5 times on phones and tablets) within the first 4 seconds frees it, otherwise it remains locked for 6 more seconds. The real Vez'nan never locks towers.
The real Vez'nan. Once the second illusion is defeated, the remaining Vez'nan turns into the real one, teleporting to the center of the battlefield as all other enemies die and the final wave begins.
His arrival. Upon his arrival, soldiers are instantly killed (summons that cannot be instantly killed survive), heroes get stunned for 14 seconds, and he restores to his full health of 5,999 / 6,999 / 7,999 / 9,999 on Casual / Normal / Veteran / Impossible.
Casts demonic bolts. Every 5 seconds, he hurls a demonic bolt toward a unit 100 to 260 away, dealing 180-240 true damage.
Siphons souls to heal. Every 7 seconds, the real Vez'nan siphons up to 5 units within a radius of 250, dealing 550-750 true damage to each (any soldier who would die from that damage is consumed instead), and healing 100 health for every unit drained.
His death ends the fight. His death kills every remaining enemy on the battlefield.

Achievement on this stage: Promise Kept, defeat vez'nan at vez'nan's tower (15.2% of players).

Next in the codex

All 18 stagesWhere each boss waits, with waves and gold.
EnemiesEverything that walks with them.
Loadout plannerPlan the heroes and towers for a boss stage.
AchievementsPromise Kept and the other boss badges.