- In China each Warriors book would come with a training card

(from left to right is, Fireheart, Bluestar, Swiftpaw, Graystripe, Tigerstar, then all of them
next column is Brambleclaw, Feathertail, Squirrelpaw, Leafpaw, Crowpaw, then Hawkfrost
the last column is Hollyleaf, Jayfeather, Lionblaze, Blackstar, Squirrelflight, then Breezepelt)

There are also singled out characters like:

- Yellowfang (gray tabby with brownish eyes, card is yellow)

-Spottedleaf (Calico with yellowish eyes, card is pink)

- Sandstorm (Orange golden with amber eyes, card is gray)

-Leafstar (Cream tabby, card is dark blue)

-Cloudstar (Gray tabby with blue eyes, card is red)

- Crookestar (light orange tabby with crooked jaw, card is green)

-Oakheart (Orangeish brown tabby with orange eyes, card is blue)

It kept on glitching out when I linked them so I guess you could find them here:

https://www.google.com/search?q=warrior+cat+trading+cards&rlz=1C1CHFX_enUS531US594&espv=2&source=lnms&tbm=isch&sa=X&ved=0ahUKEwj8-L-HnfXSAhUb3YMKHX4FAjcQ_AUIBygC&biw=1280&bih=918#q=warrior+cat+trading+cards&tbm=isch&tbs=rimg:CU0Ua3dze2nPIjgv5a8VFCHC8tTklczUQ1re7lK86pyyRYylOWXS-VomiqlXeN-xGKAcEd8Gey-7YTn3oaEM3u4aSSoSCS_1lrxUUIcLyEaIMX7Dhik4TKhIJ1OSVzNRDWt4RogxfsOGKThMqEgnuUrzqnLJFjBGEvJFUML30-ioSCaU5ZdL5WiaKEaIMX7Dhik4TKhIJqVd437EYoBwRogxfsOGKThMqEgkR3wZ7L7thOREdyKy1fGR8MyoSCfehoQze7hpJEZelRpEV1sE9&*&imgrc=_

-You'll have to copy and paste..