Parents are the moms and dads of pookies, biggies, and other children. They are most commonly known as mumus (mother) and duh duhs (father), though the names have changed often over the years.
Mumus are much more common than their male counterparts. Usually a single mother will go to the pet shop and adopt an abandoned child. Duh duhs also do this. Sometimes both with go together, as if they were a couple or married, and adopt a child. Whole families are sometimes formed.
Parents generally wear more formal clothes than average member penguins. Dresses are seen on many mothers, but duh duhs tend to dress a bit more casual than that.