In the 'star odyssey novel', the main characters could be a diverse group. There might be a young and inexperienced but highly motivated novice who has a natural talent for space navigation. Then there could be an old - timer who has seen many space oddities and serves as a mentor. There may also be a female character who is a strong fighter and diplomat, able to handle both physical threats and negotiate with different species. However, this is all speculation without actually reading the novel.
I don't know for sure as I haven't read the 'star odyssey novel'. But it's likely to have characters like a brave captain leading the space exploration, a brilliant scientist who figures out the mysteries of the new worlds, and maybe an alien ally or a rebel trying to stop the main characters' mission.