Once again , got fascinated by a build ( construction grevious build ) and inspired to build a bionicle character out of that
There was a mask maker , which tried to recreate the kanohi avohki , using the terribly unstable energized protodermis. In its creation process however , the mask started to show weird pulses , and it was gradually turning grey. Curious , the mask maker brought the avohki clone closer to his face for inspection , that's when dark tendrils of shadow latched on to him , transforming him into a giant . He was kopra , but now all he is is a hulking beast. The mask he bore was the kanohi vraska , mask of demise , which allows the user to permanently drain the powers of rival kanohi .
It is said that once , kopra attacked a Makuta stronghold during the dark hunter wars , it is not known what happened to kopra , but mysteriously , it was the same time period when the kanohi avsa , mask of draining worn by Makuta vampra appeared.