Characters

Haruhi Suzumiya (涼宮 ハルヒ, Suzumiya Haruhi)
The title character and leader of the SOS Brigade. Her energetic and eccentric character proves to be a driving force for the series.

Kyon (キョン, Kyon)
A student with whom Haruhi willingly interacted. Even though Haruhi is the title character, the story is told through his viewpoint. Through narration and dialogue, he provides his insight, perspective, and opinions on the series' events.

Yuki Nagato (長門 有希, Nagato Yuki)
A humanoid interface created by the Data Integration Thought Entity whose responsibility involves the monitoring of Haruhi and the investigation of the events three years prior to the present story. She possesses the ability to manipulate the surrounding environment as she sees fit. Also, she has the capability to access Closed Space.

Mikuru Asahina (朝比奈 みくる, Asahina Mikuru)
A time traveler from the future who is assigned to investigate the reason for the inability to travel to any point in time before three years prior to the present story.

Itsuki Koizumi (古泉 一樹, Koizumi Itsuki)
An esper who suddenly acquired his powers three years prior to the present story. Along with other espers, he uses his power to combat beings of energy within Closed Space