One common element is the inquisitor's religious or spiritual authority. They often use their knowledge of the divine to deal with the ghosts. Another element is the spooky setting, like old castles or monasteries. And usually, there is some sort of mystery behind the ghost's presence, such as an unresolved past event or a wrong that was done to the ghost in its lifetime.
Once upon a time, there was an inquisitor named Father Ignatius. He was sent to an old, haunted monastery. As he entered the dimly lit halls, he felt a cold chill. Strange noises filled the air. One night, he saw a figure in white, a ghostly monk. The monk's eyes were hollow. Father Ignatius began to pray, and suddenly, the ghost vanished. He then realized that the spirit was trapped there, waiting for someone to free it through prayer.
A possible character for the High Inquisitor could be a long - lost relative of Dolores Umbridge. They might share her strict and often cruel approach to discipline. This character could have been in hiding for years, secretly observing Hogwarts from afar and waiting for the right moment to impose their own version of order.
The 'Optical Inquisitor' might be a very niche or new concept. Maybe it's from a specific video game, book, or some indie project. If it's from a game, it could be about a character who has some sort of power related to optics and is on a mission to uncover secrets or fight enemies. However, without more details, this is just speculation.
The Grand Inquisitor might interact with Anakin Skywalker. This would be really interesting as Anakin is on the verge of turning to the dark side during the Clone Wars. The Inquisitor could try to nudge Anakin further towards the dark side, or Anakin could sense the dark presence in the Inquisitor and be suspicious of him.
Another great thing to do is to hunt down Jedi. As a Sith Inquisitor, it's your duty to root out the Jedi. You can follow leads, interrogate suspects, and when you find a Jedi, engage in a epic lightsaber duel. It not only shows your power but also your loyalty to the Sith order. You could also try to convert some of the weaker - willed Jedi to the dark side, which would be a great achievement for a Sith Inquisitor in a story.
One of the main themes is the conflict between faith and freedom. The Grand Inquisitor represents a certain view of religious authority that restricts individual freedom in the name of faith.
The common people in the story are also important. Their reactions to the Grand Inquisitor and Christ, and their acceptance or rejection of the ideas presented, help to drive the story's exploration of themes like faith, power, and freedom.