Gali

There are multiple articles with the name you are looking for:


 * Gali (2001-2010), the original version of the character; Toa Mata of Water, Toa Nuva of Water, & Toa Mistika.
 * Gali (2015-2016), the rebooted version of the same character; Master of Water, & Uniter of Water on Okoto.