The apartment building is red with a bunch of windows on the sides of the building in various colors. The front doors are brown and have a small gray chimney on the top. On the side of the building, there is a black pole with a yellow sign that reads the apartment's name in brown letters.
Mermaid Man and Barnacle Boy originally lived in Winchell Apartments before they became superheroes. Back then, their names were Tim and Ernie.
A long time ago, Tim and Ernie were about to watch a movie while the popcorn was in the microwave. However, in the apartment directly above, a rogue scientist doing tests on radioactive ants knocked over a jar of his infected specimens, one of which, without any hesitation, crawled down one floor and miraculously landed undetected on Ernie's head. The infected specimen viciously bit Ernie, which caused him to scream in pain while stumbling backwards. This knocks him and Tim through a wall out of the apartment building.
After some shenanigans, Ernie and Tim came flinging back miraculously unharmed to the apartment building and the popcorn in the microwave was done. The two then proceeded with movie night and ate slightly overcooked popcorn. Suddenly, an amazing reaction to said popcorn hit them with a jolt of cosmic super energy, metamorphosing Ernie into an incredibly strong, seastar-wearing superhero, and Tim into a slightly less strong, but also super sailor-looking man.
They suddenly and incredibly urged to breathe water instead of air. Because of this, Ernie and Tim left the Winchell Apartments building to live under the ocean and officially became known as Mermaid Man and Barnacle Boy.