1, Only ever got the one with the Muaka/Kane-ra, more or less the same as a regular Hau. 2. Not to my knowledge, but I'm not very knowledgeable in such things. 3. Glitter Avohkii feels like gold or silver Avohkii, a slightly malleable plastic mask, most similar in feel to Great Rau that Nokama had. Smells the same as gold Avohkii. 4. Glitter is inside plastic, so no worries! 5. Rubbery, somewhat rougher than a Kraata, and somewhat thicker, pretty much what Chuck said. 6. They don't fit very well on Metru heads at all, you can sorta force it on, but it won't really fit and will fall off easily, original Mata heads(and McToran heads for that matter) fit much better in comparison, that is to say the Krana actually fits at all(and in the case of the Mata heads, fits like some sort of face-glove)