So we all know that regardless of which year, or which generation we're looking at, Kopaka has to have an eye-thingy. An X-Ray lens. A vision scope. Whatever you call it, he just doesn't look like Kopaka without it. Even in Gen II, where he doesn't have X-Ray vision, he still has the eye thing. People even got annoyed when his Phantoka set swapped which side it was on. What I'm wondering is whether there are any distinctive characteristics on other Bionicle characters that people think should *always* be there. When a character gets transformed or upgraded, how can the set designers ensure that the character still looks like themselves in their new form? Could be distinctive shapes, colours, body types, signature weapons, or any other feature- and it doesn't have to be necessarily true to reality, either- What sort of design consistency would you like to see in Bionicle?