Fiend

Fiend Monsters are a particularly nasty type of card to face. Fiends also power up from the Yami Field Spell Card, and since many Fiends are Dark, also get a boost from Mystic Plasma Zone.

Popular Fiend Archetypes include Archfiend and Dark World.

Here's a list of the Fiend-type monsters:

• Archfiend General
• Archfiend of Gilfer
• Archfiend Soldier
• Beast of Talwar
• Cyber Archfiend
• Darkbishop Archfiend
• Desrook Archfiend
• Grand Tiki Elder
• Infernalqueen Archfiend
• Lesser Fiend
• Melchid the Four-Face Beast
• Mist Archfiend
• Shadowknight Archfiend
• Skull Archfiend of Lightning
• Slate Warrior
• Summoned Skull
• Terrorking Archfiend
• The Masked Beast
• Toon Summoned Skull
• Vilepawn Archfiend
• Wicked Mirror
• Yata-Garasu

Counters:

• Exile of the Wicked
• Dimensional Fissure (since many fiend strategies require the graveyard)

In the OCG, Fiends were called Demons.

Aqua, Beast, Beast-Warrior, Creator God, Cyberse, Dinosaur, Divine-Beast, Dragon, Fairy, Fiend, Fish, Illusion, Insect, Machine, Plant, Psychic, Pyro, Reptile, Rock, Sea Serpent, Spellcaster, Thunder, Warrior, Winged Beast, Wyrm, Zombie