Lego Bionicle was released before in 2001 then 2010 and now 2015. There are a total of 6 masters and they're 6 protecters. Masters and protectors can be combined and be made into one great master. Note that Master and Protectors are sold separately. Each master comes with a mask and a spider. Lego released a complimentary gift with any purchase over $50 or more. I think they did this because they really wanted this theme to be famous. Bionicle is cheap and not as expensive as other legos. I think lego Bionicle is a great theme to buy.