Penelope was a minor character in the Season 9 episode "People Who Love Peepholes".
Plot[]
After Walden bought the recently deceased Charlie's house, Alan moves out. After a rough night Alan was back at the house letting his clothes get cleaned. This is when Penelope, a woman in a bikini came to see Charlie. Although she was upset upon hearing about his death, she quickly got over it by seeing Walden. At the same time, Walden's wife, Bridget, came to talk to Walden. Alan pretended to be Penelope's boyfriend to explain her presence. However, Alan uses his special power to make the women go away.