Top 5 Insane Villains

Vezon (BIONICLE G1)
Garrosh Hellscream (WoW)
The Joker (The Dark Knight Trilogy)
Glitter Alchemist Jouquin (Elsword) 
Zavok (Sonic)

The picked Top 5 incarnations of madness that kills people, unleashes their rage and brought suffering, bringing forth anarchy, creating nightmarish hallucinations, causing paranoia, and bent to destroy everyone just to seek revenge for enslavement and abuse. 

Y'Shaarj may not be one of the Top 5, but he is the madness incarnate that embodies such negative emotions and infuses his victims with rage, hatred, violence, doubt, fear, despair, and the insidious plague known as pride. Garrosh Hellscream is an uncorrupted orc who is absolutely insane and became a madman who brought suffering to not only the Alliance and Horde, but also Pandaria more than anyone and created the Iron Horde in an alternate universe Draenor. 

I have been watching TheShadowedOne1 Bionicle videos, The Dark Knight, WoW, and Injustice gameplays and read Eldritch Moon story, all have one subject: Madness. Hope you probably see my Top 5 Insane Villains,