|“||Every day, humans come one step closer to self-destruction! I'm not destroying the world, I'm saving it!||„|
|~ Albert Wesker|
|“||But I won't be ashamed, if it means I can fulfill my ambitions, I will bare my breasts for all to see! I will do whatever it takes! For I know that my actions are utterly pure!||„|
|~ Satsuki Kiryūin|
Delusional villains are characterized by or holding idiosyncratic beliefs or impressions that are contradicted by reality or rational argument, typically as a symptom or mental disorder; in other words, they commonly make false assumptions. These can be if they believe themselves or someone else as a different species, a god, a real being, a good person, a genius, a handsome or beautiful person both visibly and within. Even those who know they are evil can be deluded. It's an evil counterpart of Outright.
The types of deluded villains who actually believe themselves to be good people think that what they do is right; this makes them similar to Vigilantes, Extremists/Counterpart , Anti-Villains/Anti-Heroes, and Knight Templars, but unlike them, that type of delusional villain's cause is often nothing close to noble.
No matter how horrible an act that type of delusional villain does, they will always see it as a noble act; thus, even though they see themselves as good, many of those types of delusional villains can be Pure Evil (e.g. Akainu, Dimentio, Judge Claude Frollo, Koba, Light Yagami and Bill Cipher).
These types of delusional villains also believe that whoever disagrees with or opposes them is a bad person. Therefore, they are very paranoid and pay little to no attention to the others' opinion. These villains may be greedy or hypocritical, but cannot even see it. Worse, some of them tend to blame someone else for the destruction they cause (especially those who oppose them) while, in reality, it was their fault.
The scope of these villains' delusion can range from being a relatively minor trait (usually just simply believing they are doing good and not fanatical about it) to dangerously extreme to the point of mental illness (such as villains who are extremely outspoken that what they are doing is right and there is absolutely no chance to convince them otherwise).
However, if a certain delusional villain truly wanted to do good, that can be a redeeming quality, and a Messiah and/or Pure Good can aid in redemption. Through that can the villain truly see and accept their mistakes and then choose true righteousness over their delusional one.
Delusional villains can also be nihilists who do not believe in good or evil, thereby justifying their own heinous actions with their twisted logic. The best example of this would be Gaku Yashiro, Isaac Ray Peram Westcott and Eurus Holmes. Xenophobes who believe a certain / some foreign races to be "evil" can also count as delusional (e.g. Count Bleck's Father); same thing with Misanthropes who think humanity itself, whether an individual is truly innocent or not, is evil and should be punished (e.g. The Crusader). Social darwinists can use their twisted philosophy to justify oppression of the weak instead of helping them (e.g. Albert Wesker).