leveling his crystal spike and sending a blast of ice at Whenua.  Instantly the Toa of Earth was covered in a thick layer of ice from shoulders to knees.
...
...
The three Vahki looked at each other, obviously trying to figure out when the strange being with the twin spikes joined their side.  With the closest thing Keerakh could give to a shrug, they sprang from their perch to take custody of Whenua.

in mid-leap, Nuju caught them with a blast and froze them solid.  One swipe of his spike shattered the ice surrounding Whenua.  "The Vahki have kindly provided us with a bridge.  Let's use it."

~Greg Farshtey, Trial by Fire, pg 68 - 69