Fergus mac Roich

Fergus mac Roich Discussion

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Base Atk1,385Base HP1,761
Max Atk 7,460 Max HP 9,786
Grail Atk 10,096 Grail HP 13,268

Stat Ratings

Attack / HP Growth


Fergus is somewhat of a Saber-class lovechild of Lu Bu and Hector, and it shows in his kit. With a Berserker-style card set, Fergus is what we call a Buster gorilla, with excellent base NP gain to compensate for his limited Arts and Quick card pool. His skills are all reasonably good, with defensive and offensive steroids to aid him while also supplementing his fairly strong AoE NP with two handy secondary effects, increasing both the team’s damage and odds at landing debuffs (it essentially negates Magic Resistance, which is nice).

While Fergus isn’t exceptional at anything, he provides very solid AOE damage, especially after his interlude, while having enough selfish tools to keep himself going for the team. A very solid Buster-oriented Saber for those unfortunate to not draw an Altria variant or those who are sorely prejudiced against Caesar.


  • Buster-heavy card set and good attack stat make his damage output higher than his fellow 3* Sabers, at the cost of his potential for stargen and NP gain.
  • With a solid dodge skill and an additional defense buff skill, Fergus is durable versus both burst and consistent damage, though he has to work around the attack buff success rate debuff on his defense buff.
  • Due to his NP interlude and Valor skill, Fergus deals very respectable AOE NP damage, especially if he has a few NP level upgrades up his belt.


  • Outside of stacking stargen buffs on his NP turn, Fergus is basically a void of stars, meaning he and his allies need look elsewhere for critical star generation.
  • Though his NP gain with an ABQ is far from bad, Fergus’s NP gain is unreliable and requires ally support in order to NP multiple times in a single battle.

Craft Essence Recommendation

  • Kaleidoscope / Imaginary Element: A very typical option for quest farming, and for good reason. Lets Fergus pop off Caladbolg immediately and get to smacking people with his Busters instead.
  • Limited Zero Over / Verdant Sound of Destruction: When you have four Buster cards, running these CE’s comes naturally. For people who like to pretend their Saber is a Berserker.
  • Heaven's Feel / Angel’s Song: If you have sufficient team support, you can make Fergus’s NP into one hell of a nuke with these CEs. I would say the investment isn’t worthwhile compared to Buster boost CEs, however.

Level Up Skill Recommendation

While not a particularly exceptional Servant, Fergus does have a quite usable and vanilla skillset. His skill leveling order hence is also extremely simple. To maximize his damage output, Valor should be maxed first. Afterward, go with Mind's Eye as it is far more useful in tough fights than Defiant.

Suggested Servant Synergies

  • Jeanne d’Arc: Due to her team invulnerability and heals, Jeanne can extend Fergus’ life on the battlefield by helping him make the most of his dodge and defense buff. Jeanne’s stars don’t hurt, either.  

  • Elisabeth Bathory (Caster): With 2030 available, Star Lord Eli’s stars per turn skills stacks to make her a premium star-provider, allowing Fergus to make the most out of his Buster focused deck.  Triple Arts also allows for Fergus to gain a bit more NP with an Arts starter from Eli.

  • Okita Souji: Okita doesn’t help Fergus gain much NP, but having both against Lancers not only covers AoE and single target options, but also grants Fergus some stars to make better use of Buster card and chains.  While Caesar doesn't quite grant the same stars, he is a stronger generalist single target Saber support.  

Interlude Quests

Quest Ascen. Bond Reward
Interlude 1
Chapter Completion: London
2 3
✔ = Available ✖ = Unavailable

Servant Skills

Valor A

Increases own attack for 3 turns.
Increases own mental debuff resistance for 3 turns.

Show Info
Attack + 10%12%14%16%18%20%22%24%26%30%
Debuff Res + 20%22%24%26%28%30%32%34%36%40%
CD 7 7 7 7 7 6 6 6 6 5

Available from the start

Defiant B

Increases own defense for 3 turns.
Reduces own attack buff success rate by 50% for 3 turns. [Demerit]

Show Info
Defense + 15%16%17%18%19%20%21%22%23%25%
CD 7 7 7 7 7 6 6 6 6 5

Unlocks after 1st Ascension

Mind's Eye (True) A

Grants self Evasion for 1 turn.
Increases own defense for 3 turns.

Show Info
Defense + 10%11%128%13%14%15%16%17%18%20%
CD 8 8 8 8 8 7 7 7 7 6

Unlocks after 3rd Ascension

Class Skills

Magic Resistance B

Increase your Debuff Resist by 17.5%.

Riding B

Increase your Quick Card effectiveness by 8%.

Noble Phantasm


Rainbow Sword

Deals damage to all enemies.
Reduces defense of all enemies by 20% (3 turns).

Overcharge Effect

Reduces debuff resistence of all enemies (3 turns).

Level 1 2 3 4 5
Damage + 300% 400% 450% 475% 500%
Charge 100% 200% 300% 400% 500%
Enemy Defense - 20% 30% 40% 50% 60%


Rainbow Sword

(Unlock via Interlude Quest)
Deals damage to all enemies.
reduces defense of all enemies by 20% (3 turns).

Overcharge Effect

Reduce debuff resistance of all enemies (3 turns).

Level 1 2 3 4 5
Damage + 400% 500% 550% 575% 600%
Charge 100% 200% 300% 400% 500%
Enemy Defense - 20% 30% 40% 50% 60%

Ascension Materials


Skill Enhancement Materials

1 → 2 50,000
2 → 3 100,000
3 → 4 300,000
4 → 5 400,000
5 → 6 1,000,000
6 → 7 1,250,000
7 → 8 2,500,000
8 → 9 3,000,000
9 → 10 5,000,000

Unit Info

Star Info

Star Absorption99
Star Generation10.0%

NP Info

NP Charge per Hit (%)1.09%
NP Charge when Attacked (%)3%

Hits Info

# of Hits (A)2
# of Hits (B)1
# of Hits (Q)2
# of Hits (EX)3

Traits Info

Trait 1HumanoidTrait 6Heaven or Earth
Trait 2ServantTrait 7
Trait 3RidingTrait 8
Trait 4Brynhild's BelovedTrait 9
Trait 5Weak to Enuma ElishTrait 10

Death Info

Instant Death Chance35.00%

Other Info

Release HistoryScathach Campaign
AKAs/Aliases/(Fan) Nicknames Brock/Takeshi
AlignmentLawful Balanced
Country/Place of OriginIreland
IllustratorB suke
Seiyuu (CV)Takaya Kuroda
SeriesFate/Grand Order