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Astrologist Mona Megistus[1] is a playable Hydro character in Genshin Impact.

An astrologist of knowledgeable skill and high pride, Mona has settled in Mondstadt to avoid suffering the ire of her master after unwittingly reading the latter's diary.

Combat Info

Ascensions and Stats

Level Base
Special Stat2
(Energy Recharge)
0✦ 1/20 810 22 51
20/20 2,102 58 132
Ascension Cost (0 → 1)
Item Mora.png 20,000 Mora
1✦ 20/40 2,797 77 176
40/40 4,185 115 263
Ascension Cost (1 → 2)
Item Mora.png 40,000 Mora
2✦ 40/50 4,678 129 294 8.0%
50/50 5,383 148 338
Ascension Cost (2 → 3)
Item Mora.png 60,000 Mora
3✦ 50/60 6,041 167 379 16.0%
60/60 6,752 186 424
Ascension Cost (3 → 4)
Item Mora.png 80,000 Mora
4✦ 60/70 7,246 200 455 16.0%
70/70 7,964 220 500
Ascension Cost (4 → 5)
Item Mora.png 100,000 Mora
5✦ 70/80 8,458 233 531 24.0%
80/80 9,184 253 576
Ascension Cost (5 → 6)
Item Mora.png 120,000 Mora
6✦ 80/90 9,677 267 607 32.0%
90/90 10,409 287 653

1 Does not include weapon ATK value.
2 Characters gain special stats starting with 2✦.
Total Cost (0 → 6)

Item Mora.png 420,000 Mora


Talent Ripple of Fate.pngRipple of FateNormal Attack
Normal Attack
Perform up to 4 water splash attacks that deal Hydro DMG.

Charged Attack
Consumes a certain amount of Stamina to deal AoE Hydro DMG after a short casting time.

Plunging Attack
Gathering the might of Hydro, Mona plunges towards the ground from mid-air, damaging all opponents in her path. Deals AoE Hydro DMG upon impact with the ground.
  • On the 3rd Normal Attack, Mona will perform a short backward or forward teleport depending on her distance from the enemy.
Constellation Effects
1-Hit DMG (%)37.640.4243.244749.8252.6456.460.1663.9267.6871.44
2-Hit DMG (%)3638.741.44547.750.45457.661.264.868.4
3-Hit DMG (%)44.848.1651.525659.3662.7267.271.6876.1680.6485.12
4-Hit DMG (%)56.1660.3764.5870.274.4178.6284.2489.8695.47101.09106.7
Charged Attack
Charged Attack DMG (%)149.72160.95172.18187.15198.38209.61224.58239.55254.52269.5285.07
Charged Attack Stamina Cost50
Plunging Attack
Plunge DMG (%)56.8361.4566.0872.6977.3182.689.8797.14104.41112.34120.27
Low Plunge DMG (%)113.63122.88132.13145.35154.59165.17179.7194.23208.77224.62240.48
High Plunge DMG (%)141.93153.49165.04181.54193.1206.3224.45242.61260.76280.57300.37
Talent Mirror Reflection of Doom.pngMirror Reflection of DoomElemental Skill
Creates an illusory Phantom of Fate from coalesced waterspouts.

The Phantom has the following special properties:
  • Continuously taunts nearby opponents, attracting their fire.
  • Continuously deals Hydro DMG to nearby opponents.
  • When its duration expires, the Phantom explodes, dealing AoE Hydro DMG.

Utilizes water currents to move backwards swiftly before conjuring a Phantom.

Only one Phantom created by Mirror Reflection of Doom can exist at any time.

  • When the Phantom Explosion hits at least one enemy, it generates 3 Elemental Particles.
  • The skill deals Hydro DMG every second, for a total of 4 times.
  • The hold version of this skill grants Mona a brief period of Invincibility Frames.
  • Mona's Passive Talent 2, "Come 'n' Get Me, Hag!", affects Mirror Reflection of Doom as follows: "After she has used Illusory Torrent for 2s, if there are any opponents nearby, Mona will automatically create a Phantom. A Phantom created in this manner lasts for 2s, and its explosion DMG is equal to 50% of Mirror Reflection of Doom."
Constellation Effects
  • Constellation Level 5, Mockery of Fortuna: Increases this talent's level by 3 and raises its maximum level to 15.
DoT (%)3234.436.84042.444.84851.254.457.660.86468
Explosion DMG (%)132.8142.76152.72166175.96185.92199.2212.48225.76239.04252.32265.6282.2
Talent Stellaris Phantasm.pngStellaris PhantasmElemental Burst
Mona summons the sparkling waves and creates a reflection of the starry sky, applying the Illusory Bubble status to opponents in a large AoE.

Illusory Bubble
Traps opponents inside a pocket of destiny and also makes them Wet.
Renders weaker opponents immobile.
When an opponent affected by Illusory Bubble sustains DMG, it has the following effects:
  • Applies an Omen to the opponent, which gives a DMG Bonus, also increasing the DMG of the attack that causes it.
  • Removes the Illusory Bubble, dealing Hydro DMG in the process.

During its duration, increases DMG taken by opponents.

  • Illusory Bubble and Omen are both applied upon casting Stellaris Phantasm.
  • Visible marking: When Illusory Bubble is active on an enemy, there is a constellation-like marking on that enemy. When Omen is active on an enemy, there is a starry purple aura around that enemy.
  • Hydro application: Stellaris Phantasm applies Wet twice: once when cast, and once when the Illusory Bubble bursts.
    • It does no damage upon casting.
    • The application of Hydro causes normal Hydro-related reactions if enemy is already affected by another element, but damage isn't applied until the bubble is popped.
  • Illusory Bubble immobilization: Enemies that can be rendered immobilized by this talent scales with its level.
  • Illusory Bubble bursting: When an enemy is affected by Illusory Bubble, most hits on that enemy will cause the bubble to burst.
    • Hits that do not deal Poise Damage will not burst the bubble. For example:
      • Resonance from Geo Constructs will not burst the bubble due to it dealing no poise damage.
      • Shielded enemies, Frozen enemies, and the Magatsu Mitake Narukami no Mikoto while stunned, are immune to poise damage. Therefore, the bubble burst cannot be manually triggered on these enemies unless the statuses granting them poise damage immunity are removed.
      • Xingqiu's Elemental Burst, which deals no damage when cast, can burst the bubble because its knockback deals poise damage.
    • If no outside source bursts the bubble, it automatically bursts after 8 seconds.
  • Illusory Bubble vaporization: Maximizing Illusory Bubble's damage with Vaporize:
    • Apply Pyro to the enemy (e.g. using Bennett's Elemental Burst)
    • Cast this skill to apply Hydro, resulting in Vaporize and clearing both elemental statuses (also, it deals no damage at this point)
    • Wait 2 seconds for the Internal Cooldown of Mona's burst Hydro application
    • Switch to a Pyro DMG dealer (e.g. Bennett) and do a Pyro attack. This will first apply Pyro on the target, then it will burst the Illusory Bubble, which deals Hydro DMG and will react with Pyro to cause Vaporize again, this time dealing massive damage.
  • Omen duration: Omen status timer only starts after the bubble bursts. Since Omen is applied from the initial cast of the skill, if the bubble lasts for its whole duration (8s), Omen can have a maximum duration of 8 + 5 = 13s.
  • Omen damage bonus: Omen grants a damage bonus (maximum 60%) to any attack on the enemy affected by this status.
  • Illusory Bubble Explosion DMG does not snapshot and will be affected by changes in Mona's stats after Stellaris Phantasm is cast.
Constellation Effects
  • Constellation Level 1, Prophecy of Submersion: increases Electro-Charged DMG, Vaporize DMG, Hydro Swirl DMG, and Frozen duration by 15% when any of the player's own party members hits an opponent affected by Omen.
  • Constellation Level 3, Restless Revolution: Increases this talent's level by 3 and raises its maximum level to 15.
  • Constellation Level 4, Prophecy of Oblivion: "When any party member attacks an opponent affected by an Omen, their CRIT Rate is increased by 15%."
Illusory Bubble Duration8s
Illusory Bubble Explosion DMG (%)442.4475.58508.76553586.18619.36663.6707.84752.08796.32840.56884.8940.1995
DMG Bonus (%)42444648505254565860
Omen Duration4s4.5s5s
Energy Cost60
Talent Illusory Torrent.pngIllusory TorrentAlternate Sprint
Alternate Sprint
Mona cloaks herself within the water's flow, consuming stamina to move rapidly.

When under the effect of Illusory Torrent, Mona can move at high speed on water.
Applies the Wet status to nearby opponents when she reappears.
  • In the Spiral Abyss, before starting the challenge, Mona will sprint regularly without cloaking herself with water. But after starting the challenge, she will use her alternate sprint and cloak herself in water.
  • One can hold the sprint button while stationary to make Mona stay in place while cloaking herself in water. No stamina is consumed while Mona is stationary.
  • Mona's Passive Talent 1, "Come 'n' Get Me, Hag!", affects Illusory Torrent as follows: "After she has used Illusory Torrent for 2s, if there are any opponents nearby, Mona will automatically create a Phantom. A Phantom created in this manner lasts for 2s, and its explosion DMG is equal to 50% of Mirror Reflection of Doom."
Constellation Effects
Talent "Come 'n' Get Me, Hag!".png"Come 'n' Get Me, Hag!"1st Ascension Passive
After she has used Illusory Torrent for 2s, if there are any opponents nearby, Mona will automatically create a Phantom.
A Phantom created in this manner lasts for 2s, and its explosion DMG is equal to 50% of Mirror Reflection of Doom.
  • "Come 'n' Get Me, Hag!" creates Phantoms when Mona is in combat.
    • A Phantom can be created even if Mona is not close enough to attack an enemy, as long as Mona is in combat.
    • No Phantom is created near the Unusual Hilichurl until it is aggravated.
  • Using Illusory Torrent outside of combat counts toward the 2-second timer, although no Phantom will be created until Mona enters combat.
  • Remaining stationary while using Illusory Torrent counts toward the 2-second timer.
  • The 2-second timer resets when Mona stops using Illusory Torrent or when a Phantom is created from "Come 'n' Get Me, Hag!"
  • A Phantom created from "Come 'n' Get Me, Hag!" can exist at the same time as a Phantom from Mirror Reflection of Doom.
Talent Waterborne Destiny.pngWaterborne Destiny4th Ascension Passive
Increases Mona's Hydro DMG Bonus by a degree equivalent to 20% of her Energy Recharge rate.
  • At Ascension Phase 4, Mona receives 23.2% Hydro DMG Bonus by default, due to her ascension stat of Energy Recharge. An extra 1.6% Hydro DMG Bonus is obtained at Ascension Phases 5 and 6, for a total of 24.8% and 26.4%, respectively.
  • The effects of this passive talent do not show if Mona is fallen or not in the party.
Talent Principium of Astrology.pngPrincipium of AstrologyUtility Passive
When Mona crafts Weapon Ascension Materials, she has a 25% chance to refund one count of one material out of all the crafting materials used.
  • For more information on the efficiency of this passive compared to similar passives, see Crafting § Efficiency.

Talent Upgrade

Common Materials
Talent Level-Up Materials
1 → 2 2✦
Item Mora.png 12,500 Mora
2 → 3 3✦
Item Mora.png 17,500 Mora
3 → 4
Item Mora.png 25,000 Mora
4 → 5 4✦
Item Mora.png 30,000 Mora
5 → 6
Item Mora.png 37,500 Mora
6 → 7 5✦
Item Mora.png 120,000 Mora
7 → 8
Item Mora.png 260,000 Mora
8 → 9 6✦
Item Mora.png 450,000 Mora
9 → 10
Item Mora.png 700,000 Mora

Total Cost (1 → 10 for one talent)

Item Mora.png 1,652,500 Mora


Level Icon Name Effect
1 Constellation Prophecy of Submersion.png Prophecy of Submersion When any of your own party members hits an opponent affected by an Omen, the effects of Hydro-related Elemental Reactions are enhanced for 8s:
  • Electro-Charged DMG increases by 15%.
  • Vaporize DMG increases by 15%.
  • Hydro Swirl DMG increases by 15%.
  • Frozen duration is extended by 15%.
2 Constellation Lunar Chain.png Lunar Chain When a Normal Attack hits, there is a 20% chance that it will be automatically followed by a Charged Attack.
This effect can only occur once every 5s.
3 Constellation Restless Revolution.png Restless Revolution Increases the Level of Stellaris Phantasm by 3.
Maximum upgrade level is 15.
4 Constellation Prophecy of Oblivion.png Prophecy of Oblivion When any party member attacks an opponent affected by an Omen, their CRIT Rate is increased by 15%.
5 Constellation Mockery of Fortuna.png Mockery of Fortuna Increases the Level of Mirror Reflection of Doom by 3.
Maximum upgrade level is 15.
6 Constellation Rhetorics of Calamitas.png Rhetorics of Calamitas Upon entering Illusory Torrent, Mona gains a 60% increase to the DMG of her next Charged Attack per second of movement.
A maximum DMG Bonus of 180% can be achieved in this manner. The effect lasts for no more than 8s.

Each Constellation activation requires one Mona's Stella Fortuna Mona's Stella Fortuna.


Event Wishes

Mona was not promoted or featured with a drop-rate boost in any Event Wishes.

Other Languages

Language Official Name
English Mona
Japanese モナ
Korean 모나
Spanish Mona
French Mona
Russian Мона
Thai Mona
Vietnamese Mona
German Mona
Indonesian Mona
Portuguese Mona

Change History

Released in Version 1.0
Version 2.6

Version 2.5

Version 2.0

Version 1.5

  • Updates to character voice-overs:
    • Updated audio for Japanese:
      • "About Jean"

Version 1.4

  • Updates to character voice-overs:
    • Updated audio for Japanese:
      • "About Jean"

Version 1.3

  • Updates to character voice-overs:
    • Updated audio for Chinese:
      • Majority of the Combat voice-overs
  • Mona's Talent Illusory Torrent was optimized so that she can use it more quickly when hit.

Version 1.2

  • December 28, 2020 - Mona's portrait used in official media was silently updated to feature more details.
  • A few lines of Mona's Character Story 4 were revised.
    • Old: "You say that your line has a unique pedigree — but you also say that your hag of a teacher is a stubborn dimwit. Which of your descriptions of your master is accurate?"
      New: "You speak of your illustrious lineage, yet you also refer to your master as a "hag" and a "stubborn dimwit." Which of these descriptions is accurate?"
    • Old: Albedo could not help but ask this question — and indeed, Mona found that she had never given this question much thought either.
      New: Albedo could not help but ask this question — and when he did, Mona promptly realized that she had never given it much thought herself.

Version 1.0

  • Mona was released.


  1. 1.0 1.1 "Astrologist" is part of her name as demonstrated by the fact that the Chinese name includes 阿斯托洛吉斯 Āsītuōluòjísī, the phonetic transcription of "Astrologist" into Chinese instead of the translation 占星术士 Zhānxīng Shùshì, "astrologist".
  2. 2.0 2.1 (EN & JP) Twitter - VA Announcement
  3. (CN) Weibo - Mona Character Demo
  4. (KR) Twitter - VA Announcement