Gilles is a servant with clear design flaw. What earns him some point is the skill Tactics and his high health pool, with which player can use as a cannon fodder who can buffs, but aside from that, his skill set does not create any synergies for him, and his NP ironically reduces his effectiveness.
Pros
A skill with utility Tactics is a team buff, thereby giving Gilles an advantage in team play.
High health pool Gilles’s health can be comparable to that of SR servants, which allows him to play a role of a tank.
Cons
Kits with no synergies Gilles’s kits are all over the place. He buffs team with Tactics, but his other skill Golden Rule is self-buff, and his NP is also self-buffs with no damage. He even has Madness Enhancement EX as a passive, but due to his command set, he cannot utilise the 12% buster increase of the passive to the fullest extent, as he cannot make a buster brave chain. His NP increases his ATK by 100% at NP 5, but due to his low attack stat, it makes little difference, and it even reduces his DEF by 50%, which kills his effectiveness as a tank, while giving a negligible advantages as a damage dealer.
Easily replaceable Perhaps not as important as the first disadvantage, but another failing point of Gilles is that he brings no unique component to the team composition. Tactics is owned by the servant with same rarity has him, Caesar, and his health point advantages are not as significant compared to Caesar as well. But ATK stats matter since Caesar has a lot more skill which helps with damage (of him and the team altogether), whereas Gilles has no skill to assist him in increasing defences, thereby failing to use his strength over Caesar.
Strategies & Tips
If used, the combo which will yield the highest amount of damage for Gilles would be a brave chain with his ult and two busters. The NP will boost his damage and the two buster and extra attack will deal the damage. However if used as tank, use of NP is not recommended as it will reduce his defence, at which point he will die much quicker.
Best Servants to Work with
Due to unstable nature of his kit, there is no clear best partners for Gilles, he is unstable with anyone. If you want to utilise star generation of his NP, and Gilles as tank, use team with crit dealer and a support who increases crit damage.
His bond level 10 gift CE also works better on him than other CEs, since it increases buster of all team, which strengthens both him and team.
Max Bond Level CE
work in progress
Stats
Lvl
HP
ATK
Hidden Stats
NP Charge (ATK)
0.82%
NP Charge (DEF)
3%
Star Weight
98
Star Rate
9.9%
Death Resist
31.5%
Alignment
Lawful, Good
Attribute
Man
Traits
Brynhildr's Beloved, Humanoid, Riding, Servant, Weak to Enuma Elish
Noble Phantasm
Saint War Order ()
Increases own attack for 2 turns. Reduces own defense by 50% for 3 turns. [Overcharge]Gain critical stars.
Rank
B
Classification
Anti-Personnel
Type
Arts
Hit-Count
uff0d
Lvl
Attack +
Charge
Stars +
1
50%
100%
5
2
75%
200%
10
3
87.5%
300%
15
4
93.8%
400%
20
5
100%
500%
25
Skills
Upgrade Priority
1>2 Skill 1 Tactics should always take priority, since Golden Rule and frequent use of NP does not necessarily benefit Gilles, and being more tank-oriented, his usefulness should increase with team buff rather than self buff.
However, if intended to be used as a damage dealer due to circumstance, Golden Rule can take priority as Gilles’ NP is an important part of his damage.
Military Tactics C
Available from the start Increases party's NP performance for 1 turn.
Lvl
NP Damage +
Cooldown
1
8%
7
2
8.8%
7
3
9.6%
7
4
10.4%
7
5
11.2%
7
6
12%
6
7
12.8%
6
8
13.6%
6
9
14.4%
6
10
16%
5
Golden Rule B
Unlocks after 1st Ascension Increases own NP generation rate for 3 turns.
Lvl
NP Rate +
Cooldown
1
18%
8
2
20.7%
8
3
23.4%
8
4
26.1%
8
5
28.8%
8
6
31.5%
7
7
34.2%
7
8
36.9%
7
9
39.6%
7
10
45%
6
Prelati's Rage B
Unlocks after Strengthening Quest Increases own Buster card performance for 5 turns.
Lvl
Buster +
Cooldown
1
20%
7
2
22%
7
3
24%
7
4
26%
7
5
28%
7
6
30%
6
7
32%
6
8
34%
6
9
36%
6
10
40%
5
Class Skills
Magic Resistance B Increases own resistance to debuffs by 17.5%.
Mad Enhancement EX Increases own Buster card performance by 12%.
Riding B Increases own Quick card performance by 8%.
Command Cards
Card
Quick
Arts
Buster
Extra
Hit-Count
2
2
1
3
Gilles has two busters, two arts and one quick command card. Being able to art chain with NP seems good, since Gilles NP gained on attack is not bad, but as stated, spamming NP is not necessarily advised for Gilles, as it will reduce his effectiveness as a tank, and he merits little from being a damage dealer.