My first was Toa Vakama Metru, though I actually got him for free as a party favor. When I was five years old (yes, five), one my friends had a Bionicle themed birthday party, and frankly it was, at the time, the most amazing thing in the world. My friend gave Toa Metru sets out to a few of his guests, and so he entirely introduced me to Bionicle, as I had never even heard of it or seen an ad for it beforehand. A few weeks later, my dad bought me Matau. I went on to collect all of the Toa Metru that year, as well as Tehutti and a Vorzakh. From that year on, I bought at least four sets each year until 2010. Interestingly, one of my parents bought me a Lerahk around the same time that I got Matau, after Vakama. In stores. So even though the first set that I ever owned was Toa Vakama Metru, the oldest set that I ever bought in stores was a 2003 set.