"well, yes, obviously me. i just wondered if there was anyone else."
― Death and Death of Rats (Discworld)
The power to identify evil in oneself or others. Opposite to Goodness Sense.
Evil Intent Sensing
Users are capable of recognizing evil or negative intent in themselves or others. The user can tell how much evil is within the essence of others and decide how threatening they are based on the amount they sense.
Astro (Astro Boy) possesses an "electro-heart" that enables him to sense evil and criminal intentions in others.
Jedi and Sith (Star Wars) alike were capable of sensing evil or the "dark side" corruption of others through the person's emotions of anger.
The Brand of Sacrifice (Berserk) causes those marked with it to bleed and feel pain in the presence of evil beings such as demons, and in the presence of powerful demons such as the Godhand, the pain and blood loss can be fatal.
Emma Grayling (Doctor Who)
Because a piece of an evil mirror was lodged in his eye, Kay (Fables) is cursed to see all the evil others have ever done. Because of this he is known to gouge his eyes out only for them to grow back later.
The black light of Leviathan (Hellraiser II: Hellbound) reveals the evil deeds of those it shines on
Acnologia (Fairy Tail) sensed E.N.D and the Demons of Tartarus in their battle against Fairy Tail
Melvin Junko, AKA The Toxic Avenger (The Toxic Avenger) possesses biochemical particles in his body called "tromatons", which causes him to go into a homocidal rage when in the presence of evil, compelling him to destroy it.
In the Saint Seiya universe, if the evil in any cosmo is very strong, it will be felt by the users of the Sixth Sense.
As a creature born from evil energy, Orb (Marchen Awakens Romance) is able to sense the darkness of those around him.