Tsubasa's appearance has changed a bit over the the years. In the 1979 anime she has dark brown hair and extremely dark black eyes. In the 2005 anime her hair is changed to black and her eyes are a good deal lighter, though a bit bigger. and wears hairband
Tsubasa is an extremely famous singer and actress for whom many people go wild for. She often performs in concerts in or outside Japan (many of which Suneo has been to). She sometimes appears in movies that are filming in Tokyo, and Nobita and the gang often hang around to watch. It is hinted in the 1979 series that she might be fed up with her job, as she was annoyed that she had so much work to do she couldn't celebrate her own birthday party.
- In the English dub Tsubasa's name is changed to Sera Ivy.
- In the Bengali dub she is referred to as Miss Julie.
- For an unknown reason, her age was changed from 14 or 15 to 17 or 18 in one 1979 anime episode, but she appeared as a 14-15 year old girl for the rest of the series.