Indomitable (不撓不屈, Futō Fukutsu?, localized as "Indefatigable"GO)
| Rank | User(s) |
|---|---|
| A | Heracles Ichor |
| Heracles (Berserker) | |
| Upgrade from Battle Continuation (Fate/Grand Order) | |
| B+ | Nemo |
| The spirituality and belief of the spirit Nemo is embodied.
Continuing the battle and gaining NP, it will show its true value when Guts is activated. As a captain, when you are in trouble, you burn the flames of reversal. | |
| B | Ragnar Lodbrok |
| Superhuman physical and mental toughness. When this Skill activates, the Rank of his Endurance stat rises all the way up to A++. |
| Servant Skills |
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