Daniel is from Senegal, where he used to be an automotive engineer. He is the narrator of Black Hole Dawn's story. When we first meet him, he may look like a bit of a dork, but then again, his journey has just begun.
Not much is known about Estelle yet. She seems to have unusual interests.
Serenity is from USA. Though she was employed as a customer service representative, in her free time she found an outlet for her frustrations in martial arts.
Not much is known about Ryu yet, except that he's from Japan.
Isabel was Daniel's sister. She was an active member of the GWR (Global War Resistance), an international organization that worked to end the wars, sometimes by peaceful protest, sometimes by exposing political secrets. She did not survive the destruction of Earth, but she remains important to Daniel.