Pretty Sammy
Pretty Sammy
The versions of Pretty Sammy in the first OVA series, Magical Girl Pretty Sammy and the subsequent TV series, Magical Project S have a completely re-worked Sasami. Now she is Sasami Kawai (河合 砂沙美 Kawai Sasami?); in the OVA she is the daughter of a failed singer turned record-store owner named Chihiro Kawai and sister to Tenchi Kawai; in the TV version her parents are Ginji & Honoka Kawai, also record-store owners and she has no siblings.
An ordinary young girl, Sasami was granted magical powers by Tsunami, who is in line to become the queen of a magical realm/planet called Juraihelm. She battles an enemy called Pixy Misa, who is secretly Sasami's best friend, Misao Amano. The Pretty Sammy series was originally created as a parody of the Magical Girl genre, particularly Sailor Moon.
Overview
In both series, Tsunami was chosen to become the next queen of the magical kingdom, Juraihelm. Before she can accept the crown, Tsunami must choose someone to represent her on Earth, and she has selected Sasami Kawai, a schoolgirl whose parents run a music store, CD Vision. Sasami was sent off by her parents to deliver a CD to a house she has never been to and discovers that the customer was actually Tsunami, who then introduces herself to Sasami. Sasami was given a magical baton that would allow her to transform into the magical girl, Pretty Sammy. She was also given Ryo-Ohki as her advisor (similar to Luna of Sailor Moon).
At first, Sasami was reluctant to transform into Pretty Sammy (as she fears that everyone will be able to see through her disguise), but once Pixy Misa, another magical girl, comes into action, Pretty Sammy has to put a stop to her actions. However, neither Sasami nor her best friend, Misao Amano, are aware that Pixy Misa is actually a transformed Misao.
Also in these series, the upside-down triangle birthmark only appears on her forehead in her Pretty Sammy form.
Sasami: Magical Girls Club
Sasami from Magical Girls Club
The magical girl anime Sasami: Magical Girls Club (known in English as Sasami: Magical Girls Club) again reworked Sasami as Sasami Iwakura (岩倉 砂沙美, Iwakura Sasami). Although superficial changes to her include the total absence of the mark on her forehead and her freckles, she is still fairly recognizable. (In fact, rather than Chisa Yokoyama, child voice actress Mana Ogawa plays the voice of the character to make her sound more like a child.)
In this anime, Sasami is a fifth-grader who has magical powers since birth. But she has been forbidden by her parents to use those powers since age three; she still practices it, but in secret. It is after she and her new friend Misao find out about the secret of her new teacher, Washu Kozuka that she becomes a member of the latter's magical girl club and maximize the use of her magical power.
Her full article with more in depth information can be found here.