Ms. Opus was Opus' mother. Opus spent most of his time in Bloom County searching for her, a recurring staple of the strip. While initially discovering (after many unsuccessful attempts) that she had been killed saving soldiers in the Falklands War, he later found her being used for cruel experiments by the Mary Kay Cosmetics company, physically resembling Opus, albeit with a pink petticoat and umbrella. Unfortunately, the two were soon separated in a battle between Mary Kay and the ALF. At the end of Bloom County, he declined Ronald-Ann's offer to enter Outland, and the last strip of the latter showed him finding her in Antarctica and warmly cuddling with her.
However, as shown in Opus, she did not turn out to be the mother figure he'd hoped for (for instance, she constantly doted on him and forced him marry a gluttonous female penguin named Eunice), and he returned to Bloom County (where he tried to find a more likable mother-figure) on a crashed Mars rover. As with Breathed's artwork itself, Ms. Opus' appearance had changed: She physically resembled a real penguin compared to her son, she was much larger, uglier, and had a subtle potbelly, and her behavior was a cross of that of a real penguin and a stereotypical overbearing mother.
Read more about this topic: Minor Characters In Bloom County