Kopaka

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


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