What is wlater black?

As an AI language model, I don't have access to the specific context in which you might be referring to Walter Black. However, here are a few possibilities:

• Walter Black could be a fictional character from the 2011 movie "The Beaver," played by actor Mel Gibson. In the movie, Walter Black is a depressed and troubled man who begins using a beaver hand puppet as a form of self-therapy.
• Walter Black could be a real-life person with that name. Without additional context, it's impossible to say who this person might be or what they're known for.
• Walter Black might be a term or phrase with some kind of cultural significance that I'm not aware of. If you have more context or details about what you're looking for, I may be able to provide a more specific answer.