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MonsterGirlQuest Wiki

Undine is one of the Four Spirits, the one who represents Water.


Joins after defeating her in battle in Undine's Spring. Acquired during the main quest.


After joining Luka, Erubetie arrives and challenge the hero as well as her brethren's loyalty. After the hero beats her back and notices the disrupted flow in the slime's heart, Undine says she's surprised to see he already has such advanced skils with the water element to feel that.

As the mostly taciturn spirit of water, Undine isn't extremely talkative. The first time she talks again is at the banquet after the victory over Grangold, where she remarks that she'll have a lot to tease Salamander with. When you reach the fire spirit in Gold Volcano, the two express their natural antagonismsas Salamander wants to challenge Luka and Undine tells her it's barbaric, somehow forgetting she did the exact same thing back then.

When Luka reaches the world on the other side of Gold Cont. West Tartarus, she notices the water here is exceptionally pure, and the last time she talks is when chaosization spreads again from Ilias Temple Ruins, as she notifies the party that the rivers are dying, meaning the world will soon follow suite.

World Interactions

Battle Dialogue

“I will test your abilities...”

“Now, show me your calm energy...”

“I'm unable to get along with Salamander... Well, not to the extent that we'd kill each other.”

“I manipulate the serene power of water...”

“It is calm and peaceful here... I do not want to go outside too much.”

“The power of water is calm and refined... It is different from the power of fire.”

“I wonder if I should become part of the Slime race... I am a willful spirit, after all.”

“There is an unusual phenomenon happening in this world... The flow of water has stagnated... No, it is distorted.”

“I have a long-standing relationship with the Queen of the Slimes, Erubetie. We occasionally have discussions...”

“The power of water, that is, a mind that is clear and serene... If you do not master it, you will not be complete as a warrior.”

“Take my mucus...” (+1 Goopy Jelly)

“Take this money with you...” (+ 3000G)

“Take this magic stone of water...” (+1 Blue Water Stone)

“Could I get a fish...? I will feed it to the Slime Girls.” (Give 1 Fish)

  • Yes – “Thanks...” (+20 Affinity)
  • No – “That's fine...”

“I would like to go shopping once in a while... Could you give me some money?” (Give 1800G)

  • Yes – “Thanks...” (+25 Affinity)
  • No – “That's fine...”
  • Not enough money – “...If I look closer, you can't afford to.”

“Would you give me some holy water...?” (Give 1 Holy Water)

  • Yes – “Thanks...” (+30 Affinity)
  • No – “That's fine...”

Are you polluting the water...?

  • “I'm not polluting – “People will pollute the water as long as they live... You seem to have no understanding.” (-5 Affinity)
  • I am polluting – “Yes, people will pollute the water as long as they live... You seem to understand perfectly.” (+10 Affinity)
  • It is I who is dirty – “You do not need to depreciate yourself to that extent...”

“Have you gotten Gnome to speak...?”

  • Of course – “I'm not impressed with your lie...” (-5 Affinity)
  • No – “Yes... You are honest.” (+10 Affinity)
  • ............ – “............”

“Are you playing around with Sylph...?”

  • We play together – “Yes... It seems you have a good relationship.” (+10 Affinity)
  • Sylph plays with me – “It appears you are at her mercy...” (+10 Affinity)
  • I play with Sylph – “Shame on you...” (-5 Affinity)

“If you obtain the power of water... What will you do with it?”

  • Use it for my adventure – “Yes... I hope you can use it well.” (+10 Affinity)
  • Nothing – “Does that mean you have no desire for it...?”
  • Rule the world – “I cannot give you this power...” (-5 Affinity)

“Clear and serene... Do you know what that means?”

  • I know – “Yes... That is good.” (+10 Affinity)
  • I don't know – “Then you need more experience...”
  • I am with you – “Really... Is that it? I do not know what that means...”

Pocket Castle

Basic Greeting:

Undine: “It would be nice if the next place we go to is clean...”

With Sylph:

Sylph: “Let's play, Undine! ♪”

Undine: “Some other time, I'm in the middle of meditating...”

Sylph: “I'm going to swim inside Undine! ♪ Spa-laaash! Splash splash splash!”

Undine: “So annoying...”

Sylph: “*gurgle*...*gurgle*...”

With Gnome:

Undine: “............”

Gnome: “............”

Undine: “Do you want to meditate together...?”

Gnome: “............”

Undine: “You're sleeping...”

With Salamander:

Salamander: “Undine! Come, let's settle this!”

Undine: “I'll extinguish that fire and expose your shabby figure...”

[If Sonya is recruited]

Sonya: “Hey! You can't fight!”

Salamander: “What a thundering voice... Even the fires of our conflict are being extinguished...”

Undine: “I don't know who you're talking about, but I'll spread you out under your ass...”


Luka: “You shouldn't fight...”

With Jellil:

Jellil: “Good day, Undine...”

Undine: “You are always so relaxed... I want to learn from your calmness.”

Jellil: “Purupuru, you do...?”

Undine: “Another time, when I have some respite...”

With Slimies:

Purple Slime: “Oh, Undine...”

Green Slime: “Let's play, Undine! ♪”

Undine: “Once I return to the cave, we can all play together...”

Blue Slime: “Let's all purupuru together... ♪”

Red Slime: “It's a promise. ♪”


Undine: This kind of thing is nice once in a while... Maybe I should try catching some fish. Boomerang. Boomerang. Just Kidding.

Undine: You're surprisingly useful at times like this.

Grandeur Theater


Playful Actions

1st Action:

Undine: “............”

Undine is quietly meditating...

[Nothing happens]

2nd Action:

Undine: “............”

Undine makes a sidelong glance...

However, it appeared to be more like a glare!

[Nothing happens]

3rd Action:

Undine: “Shall I dance a little... ♪”

Undine danced the dance of water!

But nothing happened...

[Nothing happens]

4th Action:

Undine: “I'll multiply a little...”

[Undine uses Division]

5th Action:

Undine: “If I condense my power, I can create a magic stone...”

Undine presents a gift!

[+1 Blue Water Stone]

Additional Skills


  • Mind Boomerang - Combat Ability, Throwing Skills use Will instead of Att
  • Tsunami - Nature Skill (Water 500% ^ of Mag, Will) Target: All Foes, Effect: Auto-Hit, Own Water Resist +75%
  • Great Flood - Nature Skill (Water 1000% ^ of Mag, Will) Target: All Foes, Effect: Auto-Hit, Own Water Resist +75%
  • lvl 52: Tidal Wave - Nature Skill (Water 1400% ^ of Mag, Will) Target: All Foes, Effect: Auto-Hit, Own Water Resist +75%