Walter's character in Fringe adds a unique sitcom element to the show, which is known for its dark and dystopian themes. His funny moments not only provide a needed comedic element to Fringe but also serve to highlight Walter's unique perspective on the world. Having spent years in a mental institution, Walter's perspective on life vastly differs from the other characters in the show. He has a childlike sense of wonder that he finds in even the most mundane things. This adds depth and complexity to his character, making him an endearing and entertaining character to watch throughout the series.

https://screenrant.com/fringe-water-funny-moments-sitcom/