It is known since "Dreamscape" in American Dragon: Jake Long that Rose not only have parents, but also a twin sister. She only appeared in "Dreamscape" when the Huntsclan stole Rose, no other episodes that showed Rose's parents "Homecoming or Hong Kong Longs".
- Rose (twin sister)
- Rose's parents (mother and father)
- Jake Long (possible future brother-in-law)
- Jake Long Junior (possible future nephew)
- Some might believe that twin sister might be in some boarding school.
- Many fans of American Dragon: Jake Long thought of names of the twin sister, something that would be like Rose's for they're both beautiful, like Lily or Camelia.
- It is never explained why but Rose's sister never appeared again after this one appearance, not even as a teenager like Rose. It's possible she died