Its was finally reveal and found by collector all over the world the secret bear for series 21. A total of 8 secret bear for this series. For those not in the known, secret bear are those random inserted bears not shown on the packaging and in only in short productions.
Secret # 1 - BLACK RAIN MUSIC - ratio of 1/196 - Found in Carton 'A'
Secret # 2 - MARK WADE - ratio of 1/196 - Found in Carton 'B'
Secret # 3 - RUBBER - ratio of 1/96
Secret # 4 - BARBIE (cute) - ratio of 1/48
Secret # 5 - TWIN PEAKS - Dale Cooper (Horror)- ratio of 1/48
Secret # 6 - SUPERMAN (HERO) - ratio of 1/48
Secret # 7 - KAREL CAPEK- Cotty the ladybird (Animal) - ratio of 1/24
For some reason, the Artists HOLIDAY is consider as a secret with the ratio of 1/96 but its shown in the packaging. So for me its not really consider a secret, as a secret is those not shown in packaging. Only 7 secret in series 21. Good luck.