Dan Moroboshi is the protagonist in the Ultraseven TV series.

In the original series, Dan generally has a friendly and respectful demeanor towards both his colleagues in the Ultra Guard and any strangers he would encounter. When not deep in thought about suspicious and possible alien behavior, he would make small talk with his colleagues. He was thus able to develop a deep friendship with the Ultra Guard, proven by the fact that those who knew of his death in episode 11 "Fly to Devil Mountain" were deeply upset and hence were heavily driven to find the culprit responsible for his assassination. He is very passionate about preserving peace on Earth and saving human lives, as he would often loudly volunteer to participate in investigations whenever they popped up and would often risk his life and position in the Ultra Guard to save people and reveal the malicious intentions of disguised aliens. He has strong attention to detail and sensitivity to suspicious behavior, but his naivete and belief in the "honor as a fellow alien" has occasionally resulted in him falling for the plans of several aliens.