The 'Signature - Rebels' line is officially nameless, but referred to as 'Signature' or 'Basic' by the fans. In order to stay consistent the Ever After High Wiki favors the 'Signature' designation. The Ever After High Wiki also opts to consider the encompassing 'Signature' series split between 'Signature - Rebels' and 'Signature - Royals' as per the assortment setup. In the shopping section of the everafterhigh website the signature dolls are sorted into the collection called "Originals."
The 'Signature - Rebels' series does not have specific fiction to support, as the dolls represent the characters in their default fashion. Nearly every piece of fiction to feature the characters has them wearing (or can be assumed to have them wearing) their 'Signature - Rebels' fashion.
In Late 2014, problems occurred in the manufacturing process of the 'Signature' dolls, which is why no new dolls joined the lineup between July 2014 and Early 2015. For most dolls, the problems only meant a delay, but Kitty Cheshire ended up with no arm warmers.