" Barbarian King becomes gigantic, doing area damage and taking less damage"
| Level | Ability attributes ability duration | Ability attributes incoming damage reduction | Hero boosts ability duration | Hero boosts incoming damage reduction | Upgrade cost ability duration | Upgrade cost incoming damage reduction | Upgrade cost damage per second increase | Blacksmith level required |
|---|---|---|---|---|---|---|---|---|
| 1 | 12s | 15% | 17 | 6 | N/A | N/A | N/A | 1 |
| 2 | 12s | 15% | 20 | 8 | 120 | - | - | 1 |
| 3 | 13s | 20% | 23 | 10 | 240 | 20 | - | 1 |
| 4 | 13s | 20% | 26 | 12 | 400 | - | - | 1 |
| 5 | 13s | 20% | 29 | 14 | 600 | - | - | 1 |
| 6 | 13s | 25% | 32 | 16 | 840 | 100 | - | 1 |
| 7 | 13s | 25% | 34 | 18 | 1,120 | - | - | 1 |
| 8 | 13s | 25% | 37 | 20 | 1,440 | - | - | 1 |
| 9 | 14s | 30% | 43 | 22 | 1,800 | 200 | 10 | 1 |
| 10 | 14s | 30% | 53 | 24 | 1,900 | - | - | 1 |
| 11 | 14s | 30% | 63 | 26 | 2,000 | - | - | 1 |
| 12 | 14s | 35% | 74 | 28 | 2,100 | 400 | 20 | 1 |
| 13 | 14s | 35% | 84 | 30 | 2,200 | - | - | 3 |
| 14 | 14s | 35% | 94 | 31 | 2,300 | - | - | 3 |
| 15 | 15s | 40% | 104 | 32 | 2,400 | 600 | 30 | 3 |
| 16 | 15s | 40% | 115 | 33 | 2,500 | - | - | 5 |
| 17 | 15s | 40% | 125 | 34 | 2,600 | - | - | 5 |
| 18 | 15s | 45% | 135 | 35 | 2,700 | 600 | 50 | 5 |
| 19 | 15s | 45% | 137 | 36 | 2,800 | - | - | 7 |
| 20 | 15s | 45% | 140 | 36 | 2,900 | - | - | 7 |
| 21 | 16s | 45% | 142 | 37 | 3,000 | 600 | 100 | 7 |
| 22 | 16s | 45% | 145 | 37 | 3,100 | - | - | 8 |
| 23 | 16s | 45% | 147 | 38 | 3,200 | - | - | 8 |
| 24 | 16s | 50% | 150 | 38 | 3,300 | 600 | 120 | 8 |
| 25 | 16s | 50% | 152 | 39 | 3,400 | - | - | 9 |
| 26 | 16s | 50% | 155 | 39 | 3,500 | - | - | 9 |
| 27 | 17s | 55% | 160 | 40 | 3,600 | 600 | 150 | 9 |