The bohrok are, in my opinion, some of the best designs Bionicle has ever had. The head-bashing function, the ball function, canister story relevance and the ability to hang the bohrok inside of them, all "rolled in" to a Matoran sized set. I have, at present, 17 bohrok, all the Kal excluding Tahnok-Kal, and all the Va. Yes, I'm a proud member of this fanclub