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Articles about
Raiden Mei
Honkai Impact 3rdHonkai: Star Rail
I, too, was once kept in someone's heart like you. Those trivial moments, when looked back upon, are worth more than a thousand words... The past shapes who we are today. Some things are hard to remember, others hard to forget.

Summary

Raiden Bosenmori Mei (雷電忘川守らいでんぼうせんもり芽衣めい?), more commonly known as "Acheron", is a drifter claiming to be a Galaxy Ranger. She walks the cosmos alone, carrying with her a long sword.

Though aloof and taciturn, her blade flicks out like lashing lightning. And yet, she always strikes with her scabbard, never drawing the sword free.

Powers and Stats

Tier: 3-C, far higher with Unsheathed Sword

Name: Acheron, Raiden Bosenmori Mei (True name), Acheron the Watcher

Origin: Honkai: Star Rail

Gender: Female

Age: Unknown

Classification: Former-Human, Oni, Galaxy Ranger (Self-Proclaimed), Emanator of Nihility, Self-Annihilator

Powers and Abilities:

Resistances to:

Unconventional Resistances to:


Attack Potency: Galaxy level (As an Emanator of Nihility and a Self-Annihilator,[23][24][20][25] she should be at the same level of power as Jing Yuan, Feixiao, Skaracabaz and Base Phantylia. Should be more powerful than Aventurine of Stratagems, as Acheron is a fully-fledged Emanator recognized by the Aeon she follows while Aventurine of Stratagems has only a share of the authority of Diamond, an Emanator of Preservation.[9][28] Was able to fight against the illusion-like clones of Silver Wolf, Blade and Kafka in a 1v3 battle, even being capable of emerging as the winner of the combat by soundly defeating them.[6] Fought evenly with SAM to a stalemate[49][15][Statistics Values 1]), far higher with Unsheathed Sword (After unsheathing her sword, Acheron undergoes a transformation which unleashes her full power as an Emanator of Nihility, making her vastly stronger than before. Casually one-shotted a weakened Aventurine of Stratagems and obliterated his strongest attack, all with a single slash.[20] Furthermore, Welt considers her power terrifying, and stated it can affect the entire Dreamscape.[35] Should be at least comparable to "Harmonious Choir" The Great Septimus, since Acheron stated that in order to overcome Harmonious Choir's power, it was needed the same level of power as him, which is a feat she managed to accomplish[29][Statistics Values 1])

Speed: Immeasurable (Casually kept up with the illusion-like clones of Silver Wolf, Blade and Kafka in a 1v3 battle, effortlessly dodging their attacks, and then proceeded to blitz them.[6] Kept pace with SAM.[49][15] Was able to watch and keep track of the entire fight between The Trailblazer, March 7th, Himeko and Welt against a weakened Aventurine of Stratagems[20])

Lifting Strength: Class G (As an Emanator, Acheron is stronger than Pathstriders,[19] making her physically superior to SAM[Statistics Values 2])

Striking Strength: Galaxy level (Stopped a simultaneous attack from the illusion-like clones of Silver Wolf, Blade and Kafka, and then proceeded to overpower them. Clashed evenly with SAM), far higher with Unsheathed Sword

Durability: Galaxy level (It was stated that in order to defeat an Emanator, it is needed the same level of power as one.[29] Blocked several attacks from the illusion-like clones of Silver Wolf, Kafka and Blade with somewhat ease. Was able to withstand and block multiple attacks from SAM), far higher with Unsheathed Sword (Vastly more durable than before. Can withstand the force of her own attacks. Should be at least comparable to "Harminous Choir" The Great Septimus)

Stamina: Superhuman (Acheron endured countless battles against the Yaoyorozu-no-Kami and its most powerful subordinates over many years with minimal rest, including a grueling and prolonged fight against Hakuhatsu Ki, the wielder of the sword End, ultimately emerging victorious. Even after these exhausting trials, she withstood being consumed by the shadow of IX, the Aeon of Nihility. Despite this overwhelming ordeal, she summoned the strength to unleash a powerful slash against IX and successfully escaped from the Aeon of Nihility[50])

Range: Extended Melee Range with Scabbard and Unsheathed Sword, Tens of Meters with Scabbard's Energy Projection, Hundreds of Meters up to Galactic & Interdimensional with Unsheathed Sword's Powers and Abilities (A single casual energy slash from Acheron easily extended beyond the Clock Studios Theme Park, destroying Aventurine of Stratagems' rain of large chips that were covering the park.[20] Her true powers as an Emanator of Nihility were stated to be capable of affecting the entire Dreamscape,[35] which is based on everything regarding the Asdana Galaxy, including its size.[29] After unsheathing her sword, Acheron gains the ability to send her opponents to the "Horizon of Existence". Was able to nullify Ena's dream throughout the entire Dreamscape despite being on the "Horizon of Existence"[29]), Outerversal+ with Dimensional Travel (Emanators are capable of traveling through imaginary spaces and the boundary between worlds[21][Statistics Values 3])

Standard Equipment:

A sword named Naught.

Along the Passing Shore (りゅうせいがん Ryūseiganpo?): Increases the wearer's critical damage by 60%. When the wearer hits an enemy target, inflicts Mirage Fizzle on the enemy, lasting for 1 turn. Each time the wearer attacks, this effect can only trigger 1 time on each target. The wearer deals 40% increased damage to targets afflicted with Mirage Fizzle, and the damage dealt by the wearer's Ultimate additionally increases by 40%.

Intelligence: Above Average generally, Extraordinary Genius combatant (Acheron saw through Black Swan's true intentions while dancing with her, and as retaliation, she manifested her memories upon her, inducing palpitating revelation and psycho trauma. She instantly noticed Black Swan's identity upon interacting her and asked about the Annihilation Gang.[17] Acheron is highly proficient with the sword being able to fight using only the scabbard itself. She has sharpened her skills with her katana by fighting for many years against the Yaoyorozu-no-Kami.[50] She can also evenly match and eventually defeat the illusion-like clones of Blade and Kafka, both of whom are swordmasters[6])

Weaknesses: Acheron is hesitant to draw her blade unless she deems it necessary. As a Self-Annihilator, Acheron will gradually lose her senses and memories.

Notable Attacks/Techniques:

  • Trilateral Wiltcross (さんこれ Sanzu Koreki?): Deals lightning damage equal to 130% of Acheron's attack to a single enemy.
  • Octobolt Flash (八雷はちらいわた Hachirai Watahi?): Gains 1 point(s) of Slashed Dream. Inflicts 1 stack(s) of Crimson Knot on a single target enemy, dealing Lightning damage equal to 176% of Acheron's attack to this target, as well as Lightning damage equal to 66% of Acheron's attack to adjacent targets.
    • Slashed Dream Cries in Red (ざん夢染むそりょう乱一らんひと太刀たち Zanmuso Ryōran Hitotachi?): Acheron's Ultimate. Sequentially unleash Rainblade 3 times and Stygian Resurge 1 time, dealing Lightning damage up to 401.8% of Acheron's attack to a single target enemy, as well as Lightning damage up to 324% of Acheron's attack to other targets.
    • Rainblade (啼沢ていたく Teitaku-giri?): Deals Lightning damage equal to 25.9% of Acheron's attack to a single target enemy and removes up to 3 stacks of Crimson Knot from the target. When Crimson Knot is removed, immediately deals Lightning damage equal to 16.2% of Acheron's attack to all enemies. For every stack of Crimson Knot removed, the damage Multiplier for this is additionally increased, up to a maximum of 65%.
    • Stygian Resurge (黄泉返こうせんかえ Kōsen-kaeri?): Deals Lightning damage equal to 130% of Acheron's attack to all enemies and removes all Crimson Knots. Crimson Knot cannot be applied to enemies during the Ultimate.

Talent

  • Atop Rainleaf Hangs Oneness (紅葉こうよう時雨しぐればん一空いっくう Kōyō Shigure - Banri Ikkū?): When Slashed Dream reaches 9 point(s), the Ultimate can be activated. During the Ultimate, reduces enemies' Toughness regardless of Weakness Types and reduces all enemies' All-Type resistance by 22%, lasting until the end of the Ultimate.

When any unit inflicts debuffs on an enemy target while using their ability, Acheron gains 1 point of Slashed Dream and inflicts 1 stack of Crimson Knot on the target. If debuffs are inflicted on multiple targets, then the 1 stack of Crimson Knot will be inflicted on the enemy target with the most Crimson Knot stacks. This effect can only trigger once per every ability usage.

After an enemy target exits the field or gets defeated by any unit while Acheron is on the field, their Crimson Knot stacks will be transferred to the enemy target with the most Crimson Knot stacks on the whole field.

Technique

  • Quadrivalent Ascendance (相斷そうだん Shisō Danga?): Immediately attacks the enemy. At the start of each wave, gains Quadrivalent Ascendance, dealing Lightning damage equal to 200% of Acheron's attack to all enemies and reducing the Toughness of all enemies irrespective of Weakness Types. When Weakness is broken, triggers the Lightning Weakness Break effect. After using the Ultimate, Acheron gains 1 point(s) of Slashed Dream and inflicts 1 stack(s) of Crimson Knot on a single random enemy.

If attacking a normal enemy, immediately defeats them without entering combat. When not hitting any enemies, no Technique Points are consumed.

  • Red Oni (赤鬼あかおに Aka oni?): When the battle starts, immediately gains 5 point(s) of Slashed Dream and applies 5 stack(s) of Crimson Knot to a random enemy. When Slashed Dream reaches its upper limit, for every point of Slashed Dream that exceeds the limit, gains 1 stack of Quadrivalent Ascendance. Increases the maximum stackable count for Quadrivalent Ascendance to 3.
  • The Abyss (奈落ならく Naraku?): When there are 1 or 2 Nihility characters other than Acheron in the team, the damage dealt by Acheron's Basic attack, Skill, and Ultimate increases to 115% or 160% of the original damage respectively.
  • Thunder Core (雷心らいしん Raishin?): When the Rainblade from Acheron's Ultimate hits enemy targets with Crimson Knot, her damage increases by 30%, stacking up to 3 time(s) and lasting for 3 turn(s). And when Stygian Resurge triggers, additionally deals damage for 6 times. Each time deals Lightning damage equal to 25% of Acheron's attack to a single random enemy is viewed as part of the Ultimate damage.

  • Silenced Sky Spake Sooth (高天こうてんりょうらく真言しんごん Kōten Ryōraku - Shingonshi?): Critical rate increases by 18% when dealing damage to debuffed enemies.
  • Mute Thunder in Still Tempest (雷霆静らいていせい秋風あきかぜ Raiteisei - Akikaze Yamu?): The number of Nihility characters required for the Trace "The Abyss" to achieve its highest possible effect is reduced by 1. When this unit's turn starts, gains 1 point of Slashed Dream and inflicts 1 stack of Crimson Knot on the enemy with the most Crimson Knot stacks.
  • Shrined Fire for Mirrored Soul (鏡中照きょうちゅうしょう永焔えいえん Kyōchūshō Eien?): When enemy targets enter combat, makes them Vulnerable to the Ultimate damage, increasing the amount of damage they take from the Ultimate by 8%.
  • Apocalypse, the Emancipator (束縛解災そくばくかいさい Sokubaku Kaisai?): Increases the All-Type RES PEN for the Ultimate damage dealt by Acheron by 20%. The damage dealt by Basic attack and Skill will also be considered as Ultimate damage and can reduce enemy toughness regardless of Weakness Types. When Weakness is broken, triggers the Lightning Weakness Break effect.

Notable Matchups

Victories:

  • Kai (Ninjago) Kai's Profile (Speed was equalized. Pilots-Season 16 Kai was used and had access to his Vengestone gun. Fight took place in a jungle. Starting distance: 5m)

Losses:

Inconclusive:

References

  1. 1.0 1.1 The Stars Are Cold Toys
  2. 2.0 2.1 Ghost of the Past
  3. 3.0 3.1 Species of the Galaxy: Wubbaboo
  4. 4.0 4.1 4.2 Simulated Universe Swarm Disaster - Lepismat System: Massacre Saga
  5. 5.0 5.1 5.2 5.3 Keeping up with Star Rail — Acheron: Another Fall of Rain, _______ _____ ______ | Honkai: Star Rail
  6. 6.0 6.1 6.2 6.3 Acheron Trailer — Your Color | Honkai Star Rail
  7. The Tell-Tale Heart
  8. 8.0 8.1 Chaos In the Deep
  9. 9.0 9.1 9.2 Data Bank
  10. A Foxian Tale of the Haunted
  11. Memory Bubble
  12. Total Recall
  13. Myriad Celestia Trailer: The Jepella Rebellion — Scene 47 | Honkai: Star Rail
  14. Aetherium Wars
  15. 15.0 15.1 15.2 15.3 The Devil in Velvet
  16. 16.0 16.1 Version 2.0 If One Dreams At Midnight Special Program
  17. 17.0 17.1 17.2 17.3 17.4 Animated Short: Rondo Across Countless Kalpas | Honkai: Star Rail
  18. 18.0 18.1 Stranger in a Strange Land
  19. 19.0 19.1 19.2 19.3 19.4 Loading Screen
  20. 20.0 20.1 20.2 20.3 20.4 20.5 20.6 20.7 20.8 20.9 A Walk Among the Tombstones
  21. 21.0 21.1 Himeko, About the Galaxy - About its Nature
  22. 22.0 22.1 22.2 22.3 22.4 Data Bank: Terms
  23. 23.0 23.1 Cat Among Pigeons
  24. 24.0 24.1 When the Sacred Ginmill Closes
  25. 25.0 25.1 Acheron Character Story: Part IV
  26. 26.0 26.1 Welt, About the Galaxy - About the Paths
  27. Screenwriter Q&A
  28. 28.0 28.1 Pom-Pom's Intel | Emanator Special
  29. 29.0 29.1 29.2 29.3 29.4 29.5 29.6 29.7 29.8 And on the Eighth Day
  30. Along the Passing Shore
  31. Version 2.1 Into the Yawning Chasm Special Program
  32. Acheron Character Story: Part III
  33. Acheron Character Story: Part II
  34. Data Bank: Planar Ornaments
  35. 35.0 35.1 35.2 Small Town Grotesque
  36. In the Dangerous Muddy Swamp
  37. Ones Fallen Into the Abyss
  38. Adventure Mission - Calyx (Golden): Bud of Memories
  39. Adventure Mission - Stagnant Shadow
  40. Cavern of Corrosion
  41. Honkai Impact 3rd, Story Chapter XXV: Set Tomorrow Ablaze
  42. Honkai Impact 3rd, Story Chapter XXV-EX: Immortal Blades
  43. 43.0 43.1 Honkai Impact 3rd, Story Chapter XXVIII: Beyond Will
  44. Simulated Universe World 4 Event
  45. Simulated Universe: Swarm Disaster
  46. A Teacher and a Friend
  47. A Teacher and a Friend: Interlude
  48. 48.0 48.1 Punklorde Mentality
  49. 49.0 49.1 Whodunit
  50. 50.0 50.1 Myriad Celestia Trailer — Kyoden: A Cleave Across the Transient World | Honkai: Star Rail

Notes/Explanations

  1. 1.0 1.1 10.53 ZettaFoe
  2. 51.868018 million Metric Tons
  3. 1-A+

Discussions

Discussion threads involving Acheron (Honkai: Star Rail)
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