It is Botar. I have both and Botar has more pieces-he has 693 pieces!
In pieces, Kardas has about triple of Takanuva.
the kardas dragon set ..... actually its either the kardas dragon, toa titan mata nui, or takanuva of darkness and light
The offical largest Bionicle (made and sold by LEGO) in height is Kardas Dragon. Kardas is made from Brutakka, Axxon and Umbra. I'm not sure the exact height, but it beats Infected Takanuva by quite a lot.
Kardas Dragon is the tallest bionicle set.
Takanuva
The biggest Bionicle set is the Kardas Dragon, which you can make by combining Axonn, Brutata and Vezon & Fenrakk. New, slightly bigger bionicle is the large 2009 Mata Nui set, clocking in just taller then Kardas.
The "Gold" bionicle's name was Takanuva, the Toa of light.
Takanuva is the 7th Toa Nuva, he is the legendary Toa of Light and has defeated Makuta, the Makuta Metru and the Rahkshi. Takanuva was sold in two forms, once as a Toa Nuva with his Rahkshi Cycle and a second time as the second tallest Bionicle sold. Takanuva was originally Takua and featured in the 1st BIONICLE movie. The reason why many fans adore him is still unknown.
You can download them on Lego.com
bionicle starsTahu, Gresh, Takanuva, Skrall, Nektann, and Rahkshi.
There is no 'Bionicle 2010 sets, Bionicle stars is the last... ;(
Currently Takanuva. Others have owned it though
free mark