Under construction

heartlight

Notes

A Toa's heartlight flashed rapidly when he ran.[1]

A Matoran's heartlight could fade to black (presumably indicating something bad).[2]

Mentioned in:

"The Matoran within slept an unnatural sleep, eyes dark, heartlight faintly pulsating.[3]

"Axonn was on top of the Toa in the flash of a heartlight, axe blade at the intruder's throat."[4]

See The TTV Message Boards [source].