**Main Characters**
- **Majid Al-Harithi**: The protagonist of the story, a man in his forties who discovers his ability to send his consciousness back in time to his childhood to take revenge on those who betrayed him. As the story progresses, he transforms from a vengeful man into a cosmic traveler carrying the responsibility of freeing the Observer and bringing knowledge to humanity.
- **Rana Al-Saeed**: A keeper of balance who becomes Majid's closest ally and romantic interest by the end. She helps Majid understand his powers and supports him throughout his journey.
- **Abdul Rahman Al-Harithi**: Majid's father, who initially does not understand his son's strange behavior but eventually becomes a key supporter in Majid's cosmic mission.
- **Leila Al-Idrisi**: An ancient traveler and keeper of mysterious knowledge who guides Majid through the rituals of advancing through the levels of the traveler.
- **Samir Al-Qasim**: Initially the third guardian of the gates pursuing Majid, but later he questions his beliefs and joins Majid's cause after learning the truth about the Observer.
**Supporting Characters**
- **Zuhair Al-Nasser**: Majid's childhood friend who betrayed him in his original timeline. He becomes one of Majid's first targets for revenge.
- **Fatima Al-Husseini**: A high-ranking member of the Guardians of the Gates who helps Majid and his team destroy the Jerusalem Gate after seeing the truth in her dreams.
- **Ibrahim Al-Quds**: A powerful member of the High Council of the Guardians of the Gates who opposes Majid initially but later joins his cause after the truth is revealed to him.
- **Hassan Al-Qurashi**: The leader of the High Council of the Guardians of the Gates and the guardian of the Mecca Gate.
- **Farid Al-Masri**: The youngest member of the High Council, the gatekeeper of the Valley of the Kings.
- **Abdul Karim Al-Harithi**: Majid's grandfather, a traveler who disappeared after entering the void between worlds. His consciousness still exists within the void.
**Cosmic Entities**
- **The Observer**: An ancient being imprisoned in the "void between worlds," who attempted to grant knowledge and power to humanity but was imprisoned by the guardians. He communicates with Majid and guides him in his mission to destroy the gates of his prison.
- **The Guardians**: Ancient cosmic entities that imprisoned the Observer and created the Guardians of the Gates to maintain his imprisonment. They believe humanity is unprepared for the knowledge the Observer wishes to share.
**Organizations**
- **Guardians of the Gates**: A secret society established by the guardians to maintain the Observer's prison. They believe they are serving the Observer as a god, unaware of the truth of his imprisonment.
- **The High Council**: Seven fifth-level Guardians of the Gates lead the organization, each guarding one of the seven gates that form the Observer's prison.
- **Keepers of Balance**: A group that maintains the balance of cosmic energies, separate from the Guardians of the Gates but aware of their existence.