Harry Dresden is the central character in Jim Butcher's 'The Dresden Files' series, a wizard who operates as a private investigator in Chicago.

Peter Grant is the protagonist of the 'Rivers of London' series, a young police officer who becomes the apprentice to the last wizard of London, known as the Folly.

Kate Daniels is the protagonist of the 'Kate Daniels' series, a mercenary who possesses magical abilities and wields a sword.

John Taylor is the protagonist of the 'Nightside' series, a private investigator who operates in the hidden supernatural world of London, known as the Nightside.

Anita Blake is the protagonist of the 'Anita Blake: Vampire Hunter' series, a vampire hunter who works as an animator and is also a necromancer.

Atticus O'Sullivan is the protagonist of the 'Iron Druid Chronicles' series, the last practicing druid who lives in modern-day Arizona and possesses magical powers.

Mercy Thompson is the protagonist of the 'Mercy Thompson' series, a shapeshifter who works as a mechanic and solves supernatural mysteries in the Tri-Cities area of Washington.

October Daye is the protagonist of the 'October Daye' series, a half-human, half-fae private investigator who works in San Francisco and is also a knight errant.

Kim Richards is the protagonist of the 'Dresden Codak' webcomic, a wizard who lives in a magical world filled with monsters and magic, and is also a member of the Paranormal Investigation and Containment Agency (PICA).

Thomas Nightingale is the Folly, the last wizard of London in the 'Rivers of London' series, and is a powerful and experienced wizard who mentors Peter Grant.

Mr. Lupescu is the Lord of Shadows, the ruler of the Nightside in the 'Nightside' series, and is a powerful vampire who maintains order and balance in the supernatural world.

Jean-Claude is the Master Vampire of the city of St. Louis in the 'Anita Blake: Vampire Hunter' series, and is a powerful and charismatic vampire who is also Anita's lover.

Granuaile MacTiernan is the ancient Celtic god of the underworld and Atticus O'Sullivan's patron deity in the 'Iron Druid Chronicles' series, and is a powerful and mysterious figure.

Samuel Cornick is the Alpha of the local werewolf pack in the 'Mercy Thompson' series, and is Mercy's friend and ally, as well as a powerful and respected werewolf.

Tybalt is the Queen of the Unseelie Court in the 'October Daye' series, and is October Daye's rival and enemy, as well as a powerful and cunning fae.