HD Zack
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 A happy and cheerful young man who dreams of becoming a hero.
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| Kana | ザックス HD Ver | ||||||
| Romaji | Zakkusu HD Ver | ||||||
| JP Set | 30 | ||||||
| EN Set | 25 | ||||||
| Class | Type | Attributes | |||||
| Super Rare | Attack | Speed | Upright | ||||
| STR | DEF | Trait Slots | Spirit Points | ||||
| 5780 | 5749 | 3 | 30 / 36 | ||||
| slash Combo +5 | |||||||
| Deals 13 hits. 1 turn: ↑ Upright STR by 1, S-STR by 4, ↓ targets' Upright DEF by 1, DEF by 1. Inflicts more damage the higher the slot number. | |||||||
| Damage (Base) | x2.60 - 3.82 | Target |  All
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| Damage (5 dots) | x0 | Gauges | 4 | ||||
| Damage (Max) | x | SAB Tier |  7
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HD Zack is a Super Rare Attack Medal in Kingdom Hearts Unchained χ / Union χ.