Zombie slayer
From Dragon Quest Wiki
The zombie slayer is a powerful sword in the Dragon Quest VIII. True to name, it deals extra damage to creatures from the zombie family. It looks like the Zombiesbane sword, but is more powerful and has a red hilt instead of blue.
Appearances
Dragon Quest VIII
The zombie slayer has an attack bonus of +65 and deals an extra 60% damage to ghosts, zombies, etc. Makes dealing with Dullahans much easier.
Recipe: Zombiesbane + Holy talisman
Dragon Quest Monsters: Joker
The zombie slayer has an attack bonus of +81. It can be sold for 8,500 gold. Its description is "A wicked sword lethal to the undead."
Dragon Quest Monsters: Joker 2
The zombie slayer has an attack bonus of +81. It can be bought for 17,000 gold and sold for 1,700 gold. Its description is "Highly effective against the undead."