This enemy is extremely slow in speed and attack. It has long range and area attack, with extremely high damage. It has approximately 149,998 health and 2,700 damage in Chapter 2 Moon. Even though this enemy has a very slow attack rate, it has a range of 500, longer than Bahamut Cat. Its attack speed is also slightly longer than Bahamut, so avoid using Bahamut if you encounter him in Stories of Legend. The first time you fight him, he will be very hard. You can use anti-Red cats like Ninja Cat or Brave Cat. If you have Pirate Cat, use him because he will knock back Nyandam, stopping him from attacking. Swordsman Cat has massive damage against red enemies, so spamming him may do you wonders.
The same applies to its variants, Director Kurosawah and Galactic Overseer Nyandam.
Once you acquire Li'l Nyandam (Special Cat), strangely, you can actually use him to outrange Dark Emperor Nyandam, but not his other variants.
Dictionary
English Version
Angry that he isn't allowed to drink anything alcoholic. Shows off by pretending to drink. The glass is filled with coffee jelly.
To myself that the drink not drink though it emperor of evil.
Due to frustration, he himself dyed red and retaliated of course, the contents of the glass is a coffee jelly.
Strategies
In late Stories of Legend, he is very easy to kill, but when you first encounter him in Chapter 2 Moon, prepare for a beating, as he is protected by One Horns and a constant spam of Squire Rel.
Note: You will need most, if not all, of the Empire of Cats Chapter 1 superior treasures and most superior treasures from Chapter 2.
if you have pirate cat, use him so it will knockback him and therefore preventing him from attacking
Start by deploying a couple Wall Cats.
Upgrade your wallet until you can get Mythical Titan Cat.
Once One Horn has spawned, kill it with Whale Cats, Brah Cats and Mythical Titan Cat. This way, you will get a ton of money.
Repeat this until Nyandam is dead.
Good job! You have killed dark emperor Nyandam and now all that's left is the base. You got Valkyrie Cat!
Variants
Director Kurosawah (Black)
Dark Emperor Nyandam's Black variant, with better attack damage and range.
Li'l Nyandam (Red)
Has a bit more range and less time between his attacks than his older self.
The Christmas version of Nyandam with less health but more attack power, the ability to stop the movement of all cat units and has no delay between attacks.
Galactic Overseer Nyandam (Alien)
The Alien version of Nyandam that has a chance to slow cat units. He also has longer range and more damage.