Aziraphale is a main character. He is an angel, but not a typical one. He has a love for Earthly pleasures like good food and books. He is often in a bit of a moral grey area as he befriends Crowley, a demon.
One of the main themes is the battle between good and evil. In Good Omens comic novels, the angel Aziraphale and the demon Crowley are characters that represent these two sides in a rather unconventional way. They've become somewhat attached to the Earth and its inhabitants, which goes against the typical expectations of their celestial or infernal roles.
Yes, it was a successful novel. The characters in 'Good Omens' are well - developed and memorable. The story's ability to balance the serious topic of the end of the world with comical situations and witty dialogue made it a hit. Moreover, its popularity led to adaptations in other media, which is a clear sign of its success as a novel.
Sure, there is a Good Omens graphic novel. It brings the story to life in a visually appealing way. The illustrations enhance the experience of the narrative.
Good Omens is primarily a traditional novel. However, there might be some related adaptations or spin-offs in other forms, but the original work is not a graphic novel. It's known for its rich and imaginative storytelling in prose.