A mysterious young astrologer proclaims herself to be "Astrologist Mona Megistus" and possesses abilities to match the title. Erudite, but prideful. Though she is often strapped for cash and lives a life of thrift, she is resolved never to use astrology for profit... It is this very resolution that has caused her to fret about money constantly.

A mysterious young astrologer who proclaims herself to be "Astrologist Mona Megistus," and who possesses abilities to match the title. Erudite, but prideful.

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Rarity 5
Role Sub DPS
Element Hydro
Weapon Catalyst
Tier S
Gender Female
Voice Actor

Felecia Angelle (English)
Tingting Chen (Chinese)
Konomi Kohara (Japanese)
Woo Jeong-shin (Korean)

Strength and Weaknesses
Support S
Exploration S
Bosses A
Abyss A

Skills Talent

Ripple of Fate

Ripple of Fate (Normal Attack)
Perform up to four splash attacks that deal Hydro Damage.

Ripple of Fate (Charged Attack)
Consumes a specific amount of Stamina to deal Area of Effect Hydro Damage after a short casting time.

Ripple of Fate (Plunging Attack)
Gathering the might of Hydro, Barbara plunges towards the ground from mid-air, damaging all enemies in her path. Deals Area of Effect Hydro Damage upon impact with the ground.

Alternate Sprint

Illusory Torrent

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.

Elemental Skill

Mirror Reflection of Doom

Creates an illusory Phantom of fate from coalesced waterspouts.

The Phantom has the following special properties:

  • Continuously taunts nearby opponents, attracting their fire.
  • Each second, 4 times, deals Area of Effect Hydro Damage.
  • When its duration expires, the Phantom explodes, dealing Area of Effect Hydro Damage.


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.

Elemental Burst

Stellaris Phantasm

Mona summons the sparkling waves and creates a reflection of the starry sky, applying the Illusory Bubble status to the opponents in a large Area of Effect.

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 Damage, it has the following effects:

  • Applies an Omen to the opponent, which gives a Damage Bonus, also increasing the Damage of the attack that causes it.
  • Removes the Illusory Bubble, dealing Hydro Damage in the process.


During its duration, increases Damage taken by opponents.

Passive Talents

Principium of Astrology | Unlocked Automatically
  • When Mona crafts Weapon Ascension Materials, she has a 25 percent chance to refund one count of one material out of all the crafting materials used.
Come ‘n’ Get Me, Hag! | Unlocked at Ascension 1
  • After she has used Illusory Torrent for two seconds, if there are any opponents nearby, Mona will automatically create a Phantom.
  • A Phantom created in this manner lasts for two seconds, and its explosion Damage is equal to 50 percent of Mirror Reflection of Doom.
Waterborne Destiny | Unlocked at Ascension 4
  • Increases Mona’s Hydro Damage Bonus by a degree equivalent to 20 percent of her Energy Recharge rate.


Each Constellation activation requires a Stella Fortuna.

Prophecy of Submersion | Constellation Lv. 1
  • The effects of Hydro-related Elemental Reactions are enhanced for eight seconds after any of your characters in the party hit an opponent affected by an Omen:
    • Electro-Charged Damage is increased by 15 percent.
    • Vaporize Damage is increased by 15 percent.
    • Hydro Swirl Damage is increased by 15 percent.
    • The duration for which enemies are Frozen is increased by 15 percent.
Lunar Chain | Constellation Lv. 2
  • When a Normal Attack hits, there is a 20 percent chance that it will be automatically followed by a Charged Attack. This effect can only occur once every five seconds.
Restless Revolution | Constellation Lv. 3
  • Increases the level of Stellaris Phantasm by 3. Maximum upgrade level is 15.
Prophecy of Oblivion | Constellation Lv. 4
  • When any character in the party attacks an opponent affected by the Omen status effect, their Critical Hit Rate is increased by 15 percent.
Mockery of Fortuna | Constellation Lv. 5
  • Increases the level of Mirror Reflection of Doom by 3. Maximum upgrade level is 15.
Rhetorics of Calamitas | Constellation Lv. 6
  • Upon entering Illusory Torrent, Mona gains a 60 percent increase to the Damage her next Charged Attack per second of movement.
  • A maximum Damage Bonus of 180 percent can be achieved in this manner. The effect lasts for no more than eight seconds.


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Get to Level 20 and Adventure Rank 15 to make your first Ascension.

Ascension Phase 1

Adventure Rank 15 | Level 20>40

Ascension Phase 2

Adventure Rank 25 | Level 40>50

Ascension Phase 3

Adventure Rank 30 | Level 50>60

Ascension Phase 4

Adventure Rank 35 | Level 60>70

Ascension Phase 5

Adventure Rank 40 |  Level 70>80

Ascension Phase 6

Adventure Rank 45 | Level 80>90

Talent Upgrade

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Talent Level Ascension requires your character to be at Ascension Phase 2

Talent Level 1>2

Talent Level 2>3

Talent Level 3>4

Talent Level 4>5

Talent Level 5>6

Talent Level 6>7

Talent Level 7>8

Talent Level 8>9

Talent Level 9>10