salad fingers is possibly an ordinary looking man, in an ordinary world, with an unordianry life. He is very mentally ill, depressed and unmedicated, or at least refuses to take it. What we see in salad fingers episodes is how salad fingers sees the world. Being depressed and mentally ill he sees himself as the way we see him and also sees an otherwise thriving world as post apocolyptic. His friends and those he encounters are all figments of his imagination from a combination of mental illness and lonliness. Favor of rust and blood also comes from his mental illness. Salad fingers lives in an apartment in the city, apartment number 22. However he is a lonley isolated man, and therefore he sees his apartment as being just one small house in the middle of nowhere. He has no contact with any other human beings whatsoever, until episode 5, where he interacts with a girl he originally thought was a product of his imagination but turned out to be real. This is signified by her being the only other character in the series other then salad fingers that can speak. Because he simply did not know how to be with real people, he broke down. There is no word yet as to if he ever fully recovered.
"rusty kettle...(scratch scratch)... ooooaaaahhhh"