| Type | Icon | Name | SP | Required | Description |
|---|---|---|---|---|---|
| A | 
|
R Duel Infantry 1 | 70 | — | Grants HP+3. If unit is 5★ and level 40 and unit's stats total less than 160, treats unit's stats as 160 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.) |
|
R Duel Infantry 2 | 150 | R Duel Infantry 1 | Grants HP+4. If unit is 5★ and level 40 and unit's stats total less than 165, treats unit's stats as 165 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.) | |
|
R Duel Infantry 3 | 300 | R Duel Infantry 2 | Grants HP+5. If unit is 5★ and level 40 and unit's stats total less than 170, treats unit's stats as 170 in modes like Arena. (Higher-scoring opponents will appear. Stat total calculation excludes any values added by merges and skills.) | |
Cannot use:                     
| |||||
List of owners
| Unit | Skill chain | |||
|---|---|---|---|---|
 | R Duel Infantry 1 5  | R Duel Infantry 2 5 | R Duel Infantry 3 5 | R Duel Infantry 4 5 |
 | R Duel Infantry 1 5 | R Duel Infantry 2 5 | R Duel Infantry 3 5 | – |
In other languages
| Language | Name |
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| Japanese | ???
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| German | ???
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| Spanish (Europe) | ???
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| Spanish (Latin America) | ???
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| French | ???
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| Italian | ???
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| Traditional Chinese (Taiwan) | ???
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| Portuguese | ???
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