As we don't have much information about the specific 'Secret Life of Walter', Walter could be an ordinary person. Maybe he's just a regular guy with a normal job, like a clerk in a store or an office worker. But behind this ordinary facade, he has a secret life that makes him unique in the context of the story.
There could be many Walters in Germany who could be considered a success story. It could be someone who has made great contributions in the field of arts, for example, a famous painter or musician named Walter. Or perhaps it's a Walter who has been successful in sports, like a well - known athlete. Without further information, it's difficult to determine exactly who this Walter is.
Since we don't know the 'walter khan original story', it's hard to say who Walter Khan is. He could be the protagonist, an antagonist, or just a side character in the story.
We don't really know who Walter is just from this title. He could be a character based on someone the author knows, or a completely fictional construct. He might be a middle - aged man, a young adult, or even an elderly person. His identity could be slowly revealed throughout the 'Stories of the Week' as we learn more about his so - called 'secret life'.
There are quite a few. Another option is to look for fanfic anthologies related to the fandom that Chloe Sullivan is from. These anthologies often collect various fanfics in one place. And don't forget to read the reviews or comments on the fanfics if available, as they can give you an idea of whether the story is well - written and engaging.
I'm not sure specifically which 'Sullivan' you are referring to. There could be many people or things named Sullivan. It could be a family name, a brand name, or the name of a character in a story. Without more context, it's difficult to tell the origin story.