Strength Boost, called Attack Boost in Kingdom Hearts Dark Road, is a series of Special Attacks in Kingdom Hearts Unchained χ / Union χ, and an Ability and Sub-Ability in Kingdom Hearts Dark Road.
|  DiZ
 | 
| Strength Boost (アタックアップ, Atakku Appu?, lit. "Attack Up") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 3★ | Raises strength by 1 tier for 1 turn. | x1.39 | x1.41 |  |  Single | 2 | — |  
| 4★ | Raises strength by 1 tier for 1 turn. | x1.41 | x1.43 | x1.47 |  |  Single | 2 | — |  
| 5★ | Raises strength by 1 tier for 1 turn. | x1.43 | x1.47 | x1.51 | x1.55 |  |  Single | 2 | — |  
| 6★ | Raises strength by 1 tier for 1 turn. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x2.51 |  Single | 2 |  2 |  
| 7★ | 1 turn: ↑ STR by 1. |  | x9.53 | x14.30 |  Single | 2 |  2 |  | 
|  KH II Aerith
 | 
| Strength Boost (アタックアップ, Atakku Appu?, lit. "Attack Up") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 3★ | Raises strength by 1 tier for 1 turn. | x1.39 | x1.41 |  |  Single | 2 | — |  
| 4★ | Raises strength by 1 tier for 1 turn. | x1.41 | x1.43 | x1.47 |  |  Single | 2 | — |  
| 5★ | Raises strength by 1 tier for 1 turn. | x1.43 | x1.47 | x1.51 | x1.55 |  |  Single | 2 | — |  
| 6★ | Raises strength by 1 tier for 1 turn. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x2.51 |  Single | 2 |  2 |  
| 7★ | 1 turn: ↑ STR by 1. |  | x9.53 | x14.30 |  Single | 2 |  2 |  | 
|  Vivi A
 | 
| Strength Boost (アタックアップ, Atakku Appu?, lit. "Attack Up") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 3★ | Raises strength by 1 tier for 1 turn. | x1.39 | x1.41 |  |  Single | 2 | — |  
| 4★ | Raises strength by 1 tier for 1 turn. | x1.41 | x1.43 | x1.47 |  |  Single | 2 | — |  
| 5★ | Raises strength by 1 tier for 1 turn. | x1.43 | x1.47 | x1.51 | x1.55 |  |  Single | 2 | — |  
| 6★ | Raises strength by 1 tier for 1 turn. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x2.51 |  Single | 2 |  2 |  
| 7★ | 1 turn: ↑ STR by 1. |  | x9.53 | x14.30 |  Single | 2 |  2 |  | 
|  Nick Wilde[EN]
 | 
| Strength Boost (アタックアップ, Atakku Appu?, lit. "Attack Up") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 1 tier for 1 turn. | x1.40 | x1.44 | x1.48 | x1.52 | x1.56 | x1.60 | x2.40 |  All | 3 |  2 |  
| 7★ | 1 turn: ↑ STR by 1. |  | x6.76 | x10.14 |  All | 3 |  2 |  | 
|  Judy Hopps[EN]
 | 
| Strength Boost (アタックアップ, Atakku Appu?, lit. "Attack Up") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 1 tier for 1 turn. | x1.40 | x1.44 | x1.48 | x1.52 | x1.56 | x1.60 | x2.40 |  All | 3 |  2 |  
| 7★ | 1 turn: ↑ STR by 1. |  | x6.76 | x10.14 |  All | 3 |  2 |  | 
|  Winnie the Pooh A
 | 
| Strength Boost II (アタックアップⅡ, Atakku Appu II?, lit. "Attack Up II") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 5★ | Raises strength by 2 tiers for 1 turn. | x1.43 | x1.47 | x1.51 | x1.55 |  |  Single | 3 | — |  
| 6★ | Raises strength by 2 tiers for 1 turn. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x3.34 |  Single | 3 |  3 |  
| 7★ | 1 turn: ↑ STR by 2. |  | x9.53 | x19.06 |  Single | 3 |  3 |  | 
|  Piglet
 | 
| Strength Boost II (アタックアップⅡ, Atakku Appu II?, lit. "Attack Up II") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 5★ | Raises strength by 2 tiers for 1 turn. | x1.43 | x1.47 | x1.51 | x1.55 |  |  Single | 3 | — |  
| 6★ | Raises strength by 2 tiers for 1 turn. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x3.34 |  Single | 3 |  3 |  
| 7★ | 1 turn: ↑ STR by 2. |  | x9.53 | x19.06 |  Single | 3 |  3 |  | 
|  Judy Hopps[JP]
 | 
| Strength Boost II (アタックアップⅡ, Atakku Appu II?, lit. "Attack Up II") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 2 tiers for 1 turn. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x3.34 |  Single | 3 |  3 |  
| 7★ | 1 turn: ↑ STR by 2. |  | x9.53 | x19.06 |  Single | 3 |  3 |  | 
Strength Boost Cost↓
[edit]
|  Nick Wilde[JP]
 | 
| Strength Boost Cost↓ (アタックアップeco, Atakku Appu eco?, lit. "Attack Up eco") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 1 tier for 1 turn. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x3.34 |  Single | 1 |  3 |  
| 7★ | 1 turn: ↑ STR by 1. |  | x9.53 | x19.06 |  Single | 1 |  3 |  | 
|  Sebastian
 | 
| Strength Boost III (アタックアップⅢ, Atakku Appu III?, lit. "Attack Up III") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 5★ | Raises strength by 3 tiers for 1 turn. | x1.45 | x1.49 | x1.53 | x1.57 |  |  All | 6 | — |  
| 6★ | Raises strength by 3 tiers for 1 turn. | x1.49 | x1.53 | x1.57 | x1.61 | x1.65 | x1.69 | x3.38 |  All | 6 |  3 |  
| 7★ | 1 turn: ↑ U-STR & STR by 3. |  | x6.85 | x13.70 |  All | 6 |  3 |  | 
Strength Boost III Cost↓
[edit]
|  Ariel & Flounder
 | 
| Strength Boost III Cost↓ (アタックアップⅢeco, Atakku Appu III eco?, lit. "Attack Up III eco") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 3 tiers for 1 turn. | x1.40 | x1.44 | x1.48 | x1.52 | x1.56 | x1.60 | x3.68 |  All | 3 |  4 |  
| 7★ | 1 turn: ↑ U-STR & STR by 3. |  | x6.76 | x15.55 |  All | 3 |  4 |  | 
|  Mowgli & Baloo
 | 
| Strength Burst (アタックアップEX, Atakku Appu EX?, lit. "Attack Up EX") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 5★ | Raises strength by 1 tier for 1 turn. Slightly recovers HP. | x1.36 | x1.40 | x1.44 | x1.48 |  |  All | 3 | — |  | 
Strength Burst & Esuna
[edit]
|  Mowgli & Pals
 | 
| Strength Burst & Esuna (アタックアップ&エスナEX, Atakku Appu & Esuna EX?, lit. "Attack Up & Esuna EX") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 1 tier for 1 turn. Moderately recovers HP and cures own status ailments. | x1.43 | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x2.45 |  All | 4 |  2 |  
| 7★ | 1 turn: ↑ STR by 1. HP recovery LV 2. Cures own status ailments. |  | x6.79 | x10.19 |  All | 4 |  2 |  | 
 
|  Mowgli & Pals
 | 
| Strength Burst & Esuna (アタックアップ&エスナEX, Atakku Appu & Esuna EX?, lit. "Attack Up & Esuna EX") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 1 tier for 1 turn. Moderately recovers HP and cures own status ailments. | x1.43 | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x3.26 |  All | 4 |  3 |  
| 7★ | 1 turn: ↑ STR by 1. HP recovery LV 2. Cures own status ailments. |  | x6.79 | x13.58 |  All | 4 |  3 |  | 
 
|  Illustrated Kairi
 | 
| Strength Burst III (アタックアップⅢEX, Atakku Appu III EX?, lit. "Attack Up III EX") |  
| Rarity | Description | Damage | Target | Gauges | SAB |  
| ○○○○○ | ●○○○○ | ●●○○○ | ●●●○○ | ●●●●○ | ●●●●● | Max SAB |  
| 6★ | Raises strength by 3 tiers for 1 turn. Greatly recovers HP. | x1.47 | x1.51 | x1.55 | x1.59 | x1.63 | x1.67 | x3.84 |  Single | 3 |  4 |  
| 7★ | 1 turn: ↑ U-STR & STR by 3. HP recovery LV 3. |  | x9.53 | x21.92 |  Single | 3 |  4 |  | 
|  Genie
 | 
| Attack Boost (アタックアップ, Atakku Appu?, lit. "Attack Up") |  
| Description | Type | Element | Power |  
| 0 | +1 | +2 | +3 | +4 | +5 | +6 | +7 | +8 | +9 | +10 |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |   |   | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |  | 
|  Key Art #2
 | 
| Attack Boost 1[1] (アタックアップ, Atakku Appu?, lit. "Attack Up") |  
| Sub-Ability | Description |  
| Strength +1 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Cloud
 | 
| Attack Boost 2[2] (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Roxas
 | 
| Attack Boost 2[2] (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Marluxia
 | 
| Attack Boost 2[2] (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Larxene
 | 
| Attack Boost 2[2] (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Halloween Sora
 | 
| Attack Boost 2[2] (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Xemnas
 | 
| Attack Boost 2[2] (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Saïx
 | 
| Attack Boost 2[2] (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Sora & Riku
 | 
| Attack Boost 2 (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
|  Key Art #8
 | 
| Attack Boost 2 (アタックアップ2, Atakku Appu 2?, lit. "Attack Up 2") |  
| Sub-Ability | Description |  
| Strength +2 for 10s. Stacking Cards does not increase value. Can be applied more than once. |  | 
Attack Boost first appeared as an ability in Kingdom Hearts Birth by Sleep.
Notes and references
[edit]