Kraawa

Kraawa were long-necked Rahi with the ability to absorb any kinetic energy used against it, using this force to grow larger. Though a gentle and non-aggressive species, this power made it one of the most problematic Rahi to face. One Kraawa became half the size of a Knowledge Tower, prompting several Onu-Matoran to move it into the Archives where it took up 3 levels. Because of their size, the Kraawa were not held in Statis Tubes, but instead just locked up.

Behind the Sets
Kraawa could be made from the pieces of Toa Metru Nuju, Nokama, and Whenua