• A positive value indicates reduced negation (more damage taken), while a negative value indicates increased damage negation (less damage taken).
  
  
• For Resistances, lower values indicate a vulnerability (faster buildup), while higher values require more buildup to inflict the Status Ailment.

In a nutshell: (Beast of Night)

• Weakness:

Very weak to Holy Damage, So you should use Holy Damage against Beast of Night, since it does +35% damage.

• Resist:

Very resistant to Fire Damage, So you shouldn't use Fire Damage, since you would be doing -50% damage to Beast of Night.

• Status:

Status Ailment also shows Nightlord's Weakness and Resist. If Status is low, for example: Sleep 154, this means that boss has low resistant to Sleep and you should use it.
If Status resistance is High, for example: Frostbite 541, this means that it's very hard to proc. frostbite and you shouldn't use it.

• Immunity

Pretty sure, that this one is self-explainatory. If boss is immune to something, don't use that against them.

Originally posted by "CestLaDonut" on reddit:

    Click here, if you are looking for the Japanese version and also check here[dark-soku.blog.jp]    

• A cerberus that wields a chained blade and can split into three separate wolves. Deals Fire damage and is vulnerable to Holy damage.

• A colossal, crooked black frame capable of harboring lightning, with massive jaws, lined with grinding teeth to devour anything and everything it encounters.
  Only poison will stop it in its tracks.

This is the Everdark Sovereign variant of Adel Baron of Night

In the Everdark Sovereign version of Adel, Baron of Night, the boss gains new and more dangerous attacks and fight starts in phase ll.

• Lightning Teleport: Adel glows with purple energy and hovers above the battlefield. It teleports four times in the air, leaving lightning streaks each time.
  
• Slam AOE: Adel glows purple, pulls back its head, and slams its snout into the ground, causing a powerful explosion of terrain.
  
• Tornado: Adel leaps off the battlefield, and slams down, marked by a purple beam. This triggers a damaging area-of-effect blast and a large tornado that harms anyone at its edges. Spiritsprings appear, and players outside the tornado take damage over time. The tornado lasts until Adel's next Lightning Tantrum.
  

• A duo comprised of a great white moth and a mole cricket-like insect. Deals Magic damage, inflicts Poison, and is vulnerable to Fire damage.

Gnoster, Wisdom of Night (Moth)
Faurtis Stoneshield (Scorpion)

Animus, Ascendant Light (Red Moth)

This is the Everdark Sovereign variant of Gnoster, Wisdom of Night

The Everdark Sovereign variant of Gnoster plays out similarly to the regular version, with the Everdark Sovereign Gnoster starting in the second form of the regular version.

• When Everdark Sovereign Gnoster's health is depleted, it will split into three bosses: Animus, Ascendant Light; Gnoster, Wisdom of Night; and Faurtis Stoneshield.

• When Faurtis Stoneshield's health is gone, Animus, Ascendant Light takes over, making Faurtis more aggressive with stronger attacks.

• Gnoster's new attacks are powered up versions of his magic bolts. His normal six shot barrage now becomes a much faster 12 shot barrage. The magic bolts will hit you an instant after they are fired, so be ready to dodge twice in a row to avoid both volleys.
  
• His ultimate is a stronger version of his normal magic rain attack. He rises into the air, shoots magic bolts skyward, then dances while launching many small magic bolts that chase all Nightfarers.

• A Nightlord that resembles the Elden Beast. Inflicts Sleep and is vulnerable to Lightning damage.

• A humanoid goat-man that utilizies both Frenzied Flame and Erdtree incantations. Deals Holy damage and inflicts Madness, but is also vulnerable to Madness.

• A one-armed, masked centaur boss with a massive sword. He can regrow his missing left arm. Deals Holy damage and is vulnerable to Lightning damage.

This is the Everdark Sovereign variant of Champion of Nightglow

• Twinblade Flurry: Fulghor conjures his twinblade, spins it above his head, then erratically swings it multiple times.
  

• Soaring Blast: Fulghor gallops into the air, targeting one player. Once his bow is readied, the targeting reticle disappears and a faint golden line is drawn to where he will fire. He then fires a greatarrow that causes a massive explosion at the point of impact.
  

• A dragon with icy powers that resembles an Everlasting Dragon. Deals Magic damage, inflicts Frostbite, and is vulnerable to Fire damage.

• "Beyond the boundless Night there lies the hazy figure of a person. That is the Night's origin, and enemy to the world. The signs shall reveal — where the footprints of the Primordial Nightlord lead." Vulnerable to Holy damage.

Night Aspect - Heolstor (phase l ).

Weakness

Resist

Status

Immunity

+35% Holy

-10% Strike

Rot 252

Madness

+20% Fire

/

Sleep 541

Bleed

+15% Slash

/

/

Poison

+10% Pierce

/

/

Frostbite

/

/

/

/

• Health: 4,984 HP solo; 14,952 HP trio
  
• Health Everdark Sovereign: TBA
  
• Damage: Standard
  
• inflicts: /

Night Aspect - Heolstor (phase ll ).

Weakness

Resist

Status

Immunity

+20% Holy

-10% Slash

Rot 252

Madness

+20% Lightning

/

Sleep 541

Bleed

+15% Pierce

/

/

Poison

+10% Strike

/

/

Frostbite

/

/

/

/

Information & Sources

• fextralife[eldenringnightreign.wiki.fextralife.com]

• Blog[dark-soku.blog.jp]
  
• HD Pictures and Stats are from: Official Wiki[eldenringnightreign.wiki.fextralife.com]
  
• Gameplay Videos and pictures are from my own gameplay.