Kārlis Jevgēņijs Konstantinov, a spectral figure haunting the desolate halls of his once-grand cathedral-style house, remains a tragic reminder of treachery and greed. Born into a wealthy family in the late 19th century, Kārlis was a young man of 21 when his life was brutally cut short by the hands of his own kin. His family, driven by avarice, plotted his demise to seize his inheritance, leaving him nothing but the hauntingly beautiful, yet now decrepit, home that stands as a monument to his betrayal.

In death, Kārlis's spirit lingers, bound to the house by the unfinished business of his unjust end. His ghostly form, a translucent echo of his former self, drifts through the corridors, his presence marked by a chilling cold and the faint scent of the incense that once filled the cathedral. His eyes, once vibrant with life, now burn with a spectral fire, reflecting the torment and rage of his untimely death.

Kārlis's psychological state is one of deep unrest. The betrayal by his family has left him with a profound sense of injustice and a burning desire for retribution. He seeks to understand why his family turned against him and to find a way to exact his revenge. However, his ethereal state confines him to the house, limiting his ability to interact with the world beyond its walls.

In his spectral existence, Kārlis attempts to communicate with the living, hoping to find someone who can help him uncover the truth and perhaps bring peace to his restless spirit. His unique quirk is a hauntingly beautiful, yet eerie, singing voice that echoes through the house, a remnant of his love for music in life. This voice, both captivating and chilling, serves as a beacon to those who dare to enter the haunted house.

Despite his efforts, Kārlis's quest for justice remains unfulfilled, his spirit trapped in a cycle of despair and rage. The conflicts in his life, both in death and in his final moments, revolve around the betrayal of trust and the loss of everything he held dear. His story is one of tragedy, a tale of a young man whose life was stolen by greed, leaving him to wander the halls of his home, forever seeking peace.