- This article is under construction and is in need of a major cleanup.
- "Ruby Gloom is happy in her own way. Even though she is frowning, to her, a frown is only a smile upside down. In fact, Ruby is so happy, she could just die."
- — Ruby Gloom's official website
Ruby Gloom is a product line created in 2001 by illustrator Martin Hsu and owned by apparel company Mighty Fine. It started out as a line of school supplies and stationery items before switching over to books, clothing, backpacks, calendars, key chains, and plush toys. Ruby was described as "the Happiest Girl in the World".