Helga has a very dysfunctional family. Her parents (Bob & Miriam) are neglectful and do not pay her any attention in a majority of the episodes.
Helga's father, a successful pager salesman who suffers from workaholism, rarely notices her existence, favoring her over-achieving, neurotic college-aged sister Olga, whom Helga rarely gets along with. Helga refers to him as "Bob" or "Big Bob," indicating she does not really see him as her father. Bob generally does not pay attention to Helga unless she is involved in a competition, but only to serve his own competitiveness or to encourage Helga to become a carbon copy of Olga. In most episodes, Big Bob prefers watching his big screen television to listening to Helga, and usually, absent-mindedly calls her "Olga."
Miriam often gives off hints of being an alcoholic: she looks depressed, speaks in a slow, slurred voice, exhibits emotional detachment from her husband and children, is often found asleep in odd places (behind the couch, on the living room table), drinks "smoothies" (some of which have items normally found in cocktails, such as Tabasco sauce and celery stalks) and coffee (in a misguided attempt to stay sober). She also has to do a "community service job" at an animal shelter, indicating she has committed some sort of offense. It's also implied (according to the episodes "The Beeper Queen" and "Road Trip") that Miriam is a horrible driver and has had her license revoked, possibly for DUI, which may or may not tie in with the community service job she was sentenced. In the episode "Olga Comes Home," Helga changes one of Olga's grades sending her sister into a tail spin of depression. In one scene when Miriam and Bob look into Olga's bedroom to see her crying in bed, Bob says "She can't just mope around in bed all day. It's not good." Whereby Miriam replies "Why not? I do it all the time." This implies that Miriam suffers from depression which would probably tie into her alcoholism. Helga also refers to her mother as "Miriam" and relates poorly to her.