First series: 1: Firepaw 2: Fireheart and Graystripe 3: Fireheart 4: Fireheart and Cloudpaw or Fireheart and Sandstorm 5: Fireheart and a brown tabby that could be Tigerstar, Bramblepaw, or Duspelt
Second series: 1: Brambleclaw 2: Feathertail 3: Squirelpaw/flight 4: Leafpool 5: Crowfeather 6: Hawkfrost
Third Series: 1: Hollypaw, Jaypaw, Lionpaw 2: Heathertail 3: Either Stormfur and Brook 4: Jaypaw 5: Sol 6: Hollyleaf
Fourth Series: 1.Dovepaw, 2.Ivypaw 3.Flametail
Manga: Graystripe Trilogy: Graystripe, Millie, Graystripe and Millie Rise of Scourge: Scourge Tigerstar and Sasha trilogy: Sasha, Tigerstar, Tigerstar and Sasha. Ravenpaw's Path: Ravenpaw 2.Barley. 3.Ravenpaw and Barley
Field Guides: Secrets of the clans: Firestar Cats of the clans: Firestar, Tallstar, Brambleclaw, and Onestar Code of the Clans: Tallstar, Firstar, Blackstar, Leopardstar (apparently). Battles Of The Clans: Blackstar, Tawnypelt and Tigerheart.
Special Editions: BP =Bluestar. FQ=Firestar Skyclan's Destiny=Leafstar.