This is the character list for Ys VI: The Ark of Napishtim. For entries about Adol Christin, Dogi and characters from other installments, see here.
The Priestess of the Rehda clan, Olha is a hunter that finds Adol washed ashore, and believes in him, despite everyone in the village not trusting his non-elven face.
Olha's little sister. Initially scared of Adol, but after he saves her from the ash emelas monster, she comes to look to him as a big brother. She also has visions of his fierce battles, and worries endless.
- Damsel in Distress: First, she is attacked by the first boss, later, she is capturated by Ernst and taken to the Ark of Napishtim.
- Fainting Seer: She's scared by her visions of the future, which involve giant monsters that Adol has to defeat.
- Little Bit Beastly: As a Rehda, she has elf ears and a tail.
- Shy Blue-Haired Girl: She's initially hesitant to approach Adol, at least until he saves her. Part of this is because she keeps seeing visions of him fighting boss monsters.
A mysterious mercenary whom Adol encounters in the sixth game. He is famous for his skill with pole-arms and talismans. He seems to be knowledgeable about strange events that are happening in the Vortex of Canaan...
- Blade on a Stick: He wields a halberd, which gives him a range advantage in his Duel Boss battles.
- Dark Is Not Evil: Although he wears all black and is bit of a jerk, he is a man with good intentions, especially considering that he is also a member of the Clan of Darkness.
- Dark Is Edgy: He's dressed in black and while he's not a bad guy, he's also quick to criticize the concept of altruism.
- Duel Boss: In Ys Seven, he's one of the few bosses to fight Adol one-on-one, despite the party system.
- Fairy Companion: Has three of them after Ark of Naphatism that once belonged to his brother.
- Family Honor: He tried to preserve what is left of his family honor by trying to stop his evil brother.
- Jerk with a Heart of Gold: He's initially hostile towards Adol due to the latter being a meddling do-gooder, but still respects him for being a Worthy Opponent. He's also trying to prevent his brother from taking control of Napishtim and potentially causing a global flood.
- Jerkass Has a Point: He's not entirely wrong when he points out that Adol will get hurt if he sticks his nose into every problem he comes across especially when Scias takes advantage of Adol's interactions with the king of Altago.
- Mighty Glacier: Compared to other characters who wield slashing weapons in Ys Seven, he is stronger, slower, and tougher than the rest. However, he is faster than the characters who wield striking weapons.
- Private Military Contractors: He is a mercenary.
- The Red Baron: The Black Mercenary
- The Rival: To Adol.
- Screw This, I'm Outta Here!: He tries to do this in Seven once he realizes that Adol is the one destined to fight Big Bad for the fate of Altago, not him, but ends up staying due to some persuasion from Clarius, his boss.
- Trap Master: His Trapster skill in Ys Seven allows him to lay explosive tags on the battlefield. If an enemy runs over it, the tag explodes.
A Romun general who leads the Romun troop to the land of Canaan. He seems to have some connection to Geis...It turns out that he is Geis' brother and a descendant of the Clan of Darkness, who tried to gain control of the weather control Napishtim but failed. Unlike Geis who is trying to atone for the mistakes of his ancestors, he seeks to obtain the power of Napishtim for himself. To that end, he sends out his three fairies in order to undo the seal on the ark and kidnaps Isha. Using the control key Almarion and Isha's power, he manages to gain control of the ark but is ultimately defeated by Adol. After his defeat, Ernst tries to draw more power from the ark but fails, causing Napishtim to go berserk in the process. As he lays dying, he apologizes for his actions and asks Adol to stop the ark, opening the passage to the control room. He also bequeaths his three fairies to Geis.
- A God Am I: He becomes a Physical God when he gains the power of the ark.
- Aloof Big Brother: To Geis.
- Bad Boss: He always intended to betray Romn and has no issue with letting Galba-Roa sink his fleet.
- Big Bad: Of Ys: The Ark of Napishtim.
- BFS: His sword Almarion.
- Black Sheep: Like Gruda, he seeks dangerous ancient powers that most of his fellow clansmen rejected.
- Contrasting Sequel Antagonist: Unlike Dalles and Gruda, who are also Darkling leaders, Ernst is far less sociopathic, as shown by how he couldn't bring himself to kill Geis and is able to admit his mistakes rather than cling to Eldeenian artifacts to the bitter end.
- Disappears into Light: His final fate after letting Adol pass into the control room of Napishtim.
- Fairy Companion: He has the three fairies that cause most of the troubles in the land of Canaan.
- Man Behind the Man: He is responsible for leading the Romun troops into the Canaan and having the three fairies break the seal on Napishtim.
- Power Gives You Wings: He uses Almarion to gain black wings.
- Weak, but Skilled: Compared to the other bosses beyond the Point of No Return on Hard and Nightmare, Ernst is not nearly as "strong," since Galba-Roa and Napishtim get STR increases that are separate from the difficulty's damage multiplier. However, his attack patterns are much harder to dodge, making him difficult despite having lower stats on paper.
- Well-Intentioned Extremist: Downplayed. He enacted his entire plan both because he wanted a power-trip and because he wanted to control Napishtim to ensure that it doesn't go berserk. Of course, his plans become a Self-Fulfilling Prophecy when he ends up overloading Almarion and loses control of the ark.
- Wolfpack Boss: Fights alongside his three homunculi fairies.