Mumei, alongside the rest of Council + Promise and HoloMyth, is one of the 11 characters introduced in Version 0.3 - the first public version of the game.
Shoot a bunch of feathers at a spread. Pierces through targets.
Level 2
Increase damage by 20%.
Level 3
Increase hit limit by 5.
Level 4
Shoot 1 additional feather.
Level 5
Reduce the time between attacks by 30% and increase hit limit by 5.
Level 6
Shoot 1 additional feather.
Level MAX
Feathers home into targets 3 times.
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Level 1
Damage:
120% (10 – 14)
Attack time:
90 (1.5 s)
Attack count:
2
Attack delay:
5 (0.08 s)
Hit limit:
5
Hit cooldown:
15 (0.25 s)
Area:
100%
Duration:
25 (0.42 s)
Projectile speed:
9
Range:
120
Level 2
Damage:
144% (12 – 16)
Attack time:
90 (1.5 s)
Attack count:
2
Attack delay:
5 (0.08 s)
Hit limit:
5
Hit cooldown:
15 (0.25 s)
Area:
100%
Duration:
25 (0.42 s)
Projectile speed:
9
Range:
120
Level 3
Damage:
144% (12 – 16)
Attack time:
90 (1.5 s)
Attack count:
2
Attack delay:
5 (0.08 s)
Hit limit:
10
Hit cooldown:
15 (0.25 s)
Area:
100%
Duration:
25 (0.42 s)
Projectile speed:
9
Range:
120
Level 4
Damage:
144% (12 – 16)
Attack time:
90 (1.5 s)
Attack count:
3
Attack delay:
4 (0.07 s)
Hit limit:
10
Hit cooldown:
15 (0.25 s)
Area:
100%
Duration:
25 (0.42 s)
Projectile speed:
9
Range:
120
Level 5
Damage:
144% (12 – 16)
Attack time:
63 (1.05 s)
Attack count:
3
Attack delay:
4 (0.07 s)
Hit limit:
10
Hit cooldown:
15 (0.25 s)
Area:
100%
Duration:
25 (0.42 s)
Projectile speed:
9
Range:
120
Level 6
Damage:
144% (12 – 16)
Attack time:
63 (1.05 s)
Attack count:
4
Attack delay:
4 (0.07 s)
Hit limit:
10
Hit cooldown:
15 (0.25 s)
Area:
100%
Duration:
25 (0.42 s)
Projectile speed:
9
Range:
120
Level 7
Damage:
144% (12 – 16)
Attack time:
63 (1.05 s)
Attack count:
4
Attack delay:
4 (0.07 s)
Hit limit:
10
Hit cooldown:
15 (0.25 s)
Area:
150%
Duration:
60 (1 s)
Projectile speed:
17
Range:
120
Up to date with version 0.6.1692275570
In its base form, Bird Feather is a standard aimed attack with a short range. When Awakened, Bird Feather's attack is first launched at the target direction, similarly to its normal form, but upon hitting a target or reaching the maximum range, each individual burst will then seek out targets on their own at long range, without requiring any additional input from the player.
An awakened Bird Feather also gains +50% bonus area.
Special Attack
True Horror
Cooldown
80 seconds
Description
Destroy all targets in sight. Increase Haste by 1% for each target that has been sacrificed, for 10 seconds.
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Level 1
Hit limit:
Inf
Duration:
30 (0.5 s)
Up to date with version 0.6.1692275570
Grants invulnerability for a brief moment upon activation.
Only enemies visible on the screen when the ability is activated are affected.
Cannot target bosses and mini-bosses.
Skills
Friend
Level 1
Summon Friend that uses Bird Feather at 50% Power.
Level 2
Summon Friend that uses Bird Feather as well as 1 other random weapon at 65% Power.
Level MAX
Summon Friend that uses Bird Feather as well as 2 other random weapons at 80% Power.
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Level 1
Level 2
Level 3
Up to date with version 0.6.1692275570
Friend will maintain a steady orbit around the character.
As a summon, Friend has his own pickup radius and will collect nearby EXP and HoloCoin drops.
Aimed attacks are fired in the direction Mumei is aiming.
Civilization skill gains the effect of History skill, to a lesser degree.
New effect: "ATK increases by 1%/1.50%/2% for every target currently on screen, up to 100%/120%/150%. In addition, gain further 1% for every 100 targets defeated."
New skill Bloodthirsty has been added to replace History.
Bloodthirsty: "When a target is defeated, gain 1 stack of Bloodthirst. At 20 stacks Mumei heals 10% HP and gains 30%/45%/60% ATK for 10 seconds."
Friend skill now always casts Bird Feather, and effects of level 2 and 3 has been changed.
Uses one random weapon at level 2 and two random weapons at level 3 in addition to Bird Feather.
True Horror no longer deletes drops, and gains a new effect which grants a Haste buff to Mumei.
Increases Haste by 1% per target sacrificed for 10 seconds.
Bird Feather damage increased from 110% (9 – 13) to 120% (10 – 14). [Undocumented]
Mumei, along with Sana, is tied for the lowest base ATK in the game, at 0.8.
Bird Feather is based on the owl feathers seen on top of her head.[1]
The image that appears when activating True Horror is an actual drawing made by Mumei herself while playing the game Passpartout: The Starving Artist. The drawing was supposed to depict her fellow Hololive member Hoshimachi Suisei, but instead morphed into its current form over the course of the stream.[2]
Most of Mumei's skills (Civilization, Friend, and her former skill History) are based on her lore where she is the Guardian of Civilization.[1]
Friend is Mumei's unnamed companion/mascot. He lacks a real name as Mumei does not want to eventually forget it due to her constant amnesia. She calls him Friend to remind herself that he is her friend to help her soothe her anger or when he was acting fishy.[3]
Civilization is based on her being the Guardian of Civilization, specifically the lore where her creator was the embodiment of Civilization. In practice, like the rest of Council + Promise, Mumei is treated as though she herself is the representation of Civilization rather than just its guardian. The skill effect is likely based on the proliferation of humanity on Earth.
History, similar to Civilization, was based on Mumei's Civilization lore. Its ability likely referenced humanity's history of war and destruction.
Bloodthirsty is based on the general meme of a psychopathic Mumei. Its icon is based on a combination of the "Smol Mumei" VRChat model designed by her genmate Tsukumo Sana, which has the ability to switch to the True Horror face.[4] The Dan Dan Don Don cover MV, which features the aforementioned psychopathic Mumei, also used the Smol Mumei model.[5]