u/Revolutionary_Pop784

Got the secret out of the Cosbi bobble heads. Is this sought-after or rare?

I thought they were totally random, but I have read on here where they seem to come in sets. These were my top three picks, so getting them as my first 3 opens had me so happy, and tempted to buy a lottery ticket. I am not sure what my other three will be but I hope I will get the Bionicle. Thought I'd share for fun, as well as someone may be able to explain how they are sorted.
Thanks!

edit: meant Bionicle, not ninja