Oswald is a member of his brother Mickey's circus. He resigned being a magician act after his wife, Ortensia, passed away from the ink illness.

When first introduced in the series, Oswald is a very depressed individual, not using his voice if he can help it. For the first bit, he only gasps, grunts and cries. His form of communication primarily being writing on a chalkboard.

Later in the series, Oswald begins to use his voice again, initially to make his brother and children happy. Oswald's personally reverts to how the characters had previously known him for; being sassy, suave mannered and teasing.