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Fionn mac Cumhaill (2nd Fight)
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Shin Megami Tensei V: Vengeance (SMT V)
How to Beat Fionn mac Cumhaill
Fionn mac Cumhaill is a boss in Shin Megami Tensei V: Vengeance (SMT V). Read on to know the best strategies to use against Fionn mac Cumhaill, Fionn mac Cumhaill's weaknesses, best demons to use against Fionn mac Cumhaill, and the best buffs to use to counter Fionn mac Cumhaill, and the most effective strategies to use to beat Fionn mac Cumhaill!
| Fionn mac Cumhaill Guides | ||
|---|---|---|
| Boss Guide (1st Fight) | Boss Guide (2nd Fight) | Stats and Fusion Guide |
List of Contents
Fionn mac Cumhaill Stats and Weaknesses
Recommended Level
 |
||
| Recommended Level | Location | Drops |
|---|---|---|
| 32 | Mitatebashi | None |
Fionn mac Cumhaill Stats
| Strength | 36 |
|---|---|
| Vitality | 25 |
| Magic | 36 |
| Agility | 25 |
| Luck | 23 |
Fionn mac Cumhaill's Weaknesses and Resistances
Elemental Weaknesses and Resistances
| Physical | Fire | Ice | Electric | Force | Light | Dark |
|---|---|---|---|---|---|---|
| - | Null | - | Weak | - | Resist | - |
Status Ailments Resistances
| Sleep | Confuse | Charm | Mirage | Seal | Poison |
|---|---|---|---|---|---|
| Null | Resist | Resist | Resist | Null | Resist |
Fionn mac Cumhaill's Skill Proficiencies
Elemental
| Physical | Fire | Ice | Electric | Force | Light | Dark |
|---|---|---|---|---|---|---|
| +5 | +4 | +3 | -6 | - | - | - |
Other
| Almighty | Status Ailment | Recovery | Support |
|---|---|---|---|
| - | - | - | - |
Fionn mac Cumhaill's Skills
| Skill | Description |
|---|---|
| Mac an Luin +5 | Unique Skill: Severe Physical attack to 1 foe. Greater effect if a Critical hit. |
| Dark Sword +5 | 2 medium attacks to 1 foe. Chance of inflicting Seal. |
| Pierce Armor +5 | Weak Physical attack to 1 foe. Lowers target's Defense by 1 rank for 3 turns. |
| Bufula +3 | Medium Ice attack to 1 foe. |
| Maragion +4 | Medium Fire attack to all foes. Only used as a Magatsuhi Attack. |
| Tarukaja | Raises Attack of 1 ally by 1 rank for 3 turns. |
| Magatsuhi Skill: All attacks, including magical attacks, will become Critical hits for all allies for 1 turn. |
Best Demons to Use Against Fionn mac Cumhaill
| Mothman | Lilim | Cironnup |
Demons with Electric attacks
For the main damage dealers, we recommend Mothman and Lilim as they can target Fionn's weakness to Electric.
Cironnup as support
Cironnup resists 2 out of Fionn's 3 Magic attacks. It can also use Cautious Cheer to boost the team's stats and Blinding Strike to lower Fionn's Accuracy and Evasion.
How to Beat Fionn mac Cumhaill
 Weak to ElectricBring Fire DampenersLower his accuracyFuse Oni's affinity to Nahobino |
Weak to Electric
Fionn's only weakness is Electric so bring your best Zio spammers and give Nahobino strong Electric skills to gain additional turns during the fight.
Fuse Aogami Type-4's essence to Nahobino
| Zoomed In Map | Zoomed Out Map |
|---|---|
 |
 |
You can also get Ruinous Thunder for Nahobino from Aogami Type-4's essence to make him one of your attackers in this boss fight. You can get the essence from the treasure box on the east side of the highway before the leyline fount of Konan 3rd Block.
Bring Elec Gems
If you lack strong Electric skills, you can use Elec Gems instead to deal heavy Electric damage to Fionn.
Bring Fire Dampeners
When he starts gathering Magatsuhi, use a Fire Dampener to protect your team against Maragion.
Lower His Accuracy
Fionn has high skill proficiency on Physical attacks, allowing him to deal a lot of damage using skills with this affinity. Lower his Accuracy using Cironnup's Blinding Strike to increase the chances of him missing his attacks and ending his turn early.
Fuse Oni's Affinity to Nahobino
Fionn uses a lot of Physical attacks that you need to watch out for especially Mac an Luin. Give Nahobino resistance to Physical attacks by using an Oni's essence to boost his survivability.
Shin Megami Tensei Related Guides
Boss Battle Guides | List of Bosses
All Boss Types
| Related Boss Guides | |
|---|---|
 Story Bosses |
 Optional Bosses |
 DLC Bosses |
 Superbosses
|
SMTV: Vengeance Story Bosses
| SMTV: Vengeance Story Boss Guides | |
|---|---|
 Glasya-Labolas |
 Naamah |
 Eisheth |
 Yuzuru and Hayataro |
 Agrat |
 Beelzebub |
 The Four Qadistu |
 Zeus and Odin
|
 Abdiel and Ichiro |
 Tiamat |
 Tehom |
|
Story Bosses
| Story Boss Guides | |
|---|---|
 Hydra |
 Eligor |
 Nuwa |
 Lahmu (1st Fight) |
 Loup-garou |
Fionn mac Cumhaill |
 Lahmu (2nd Fight) |
 Shohei Yakumo |
 Surt |
 Ishtar |
 Chernobog |
 Arioch |
 Abdiel |
 Odin |
 Zeus |
 Vasuki |
 Metatron |
 Tsukuyomi |
 Nuwa |
 Abdiel |
 Lucifer |
 Lucifer (Secret Ending) |
Optional Bosses
Optional Mini-Bosses
| Optional Boss Guides | |
|---|---|
 Apsaras |
 Leanan Sidhe |
 Shiki-Ouji |
 Xuanwu |
 Jatayu |
 Kumbhanda |
 Quetzalcoatl |
 Baihu |
 The Kunitsukami |
 Futsunushi |
 Adramelech |
 Zaou-Gongen |
Punishing Foes
| Punishing Foes Guides | |
|---|---|
 Oyamatsumi |
 Horus |
 Girimekhala |
 Hecatoncheires |
 Chimera |
 Seth |
 Bishamonten |
 Jikokuten |
 Koumokuten |
 Zouchouten |
 Garuda |
|
DLC Bosses
| DLC Boss Guides | |
|---|---|
 Artemis |
 Cleopatra |
 Mephisto |
 Matador |
 Daisoujou |
 Hell Biker |
 White Rider |
 Red Rider |
 Black Rider |
 Pale Rider |
 Mother Harlot |
 Trumpeter |
Superboss Optional Bosses
| Vengeance Optional Boss Guides | |
|---|---|
 Shiva |
 Demi-Fiend |
 Masakado
|
 Satan |
Comment
2 
Anonymous almost 4 years
Anonymous almost 4 yearsYou are only hurting yourself by using Mothman to deal damage. Use Ame-no-uzume instead she can actually do damage unlike Mothman.
Author
Shin Megami Tensei V Vengeance (SMTVV) Walkthrough & Guides Wiki
How to Beat Fionn mac Cumhaill
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Thanks king, Imma do that rn. Only hitting like 78 with moth man 😑