Karax

Karax is a Khalai phasesmith. An expert in weapons, armor and ships. Karax is one of the most precise of protoss engineers. Over the course of the war against Amon, he was able to rise above his worker origins, serving as an important part of the war effort.

Karax is shorter and stockier than most protoss. The armor he wears also differs in that it is more functional than ceremonial.

Biography
Karax was among the Golden Armada when it assaulted Aiur. After Amon forced the protoss into retreat, he guided Hierarch Artanis through the Spear of Adun, explaining its systems, and how he had given orders for the Templar in stasis to have their nerve chords removed, as per Amon's corruption of the Khala. He had already been forced to sever his own nerve chords, but had attached cybernetic tentacles to the tips, effectively giving him extra means of physical manipulation.

Korhal
When the Spear of Adun arrived at Korhal, the Sky Shield space platform was under attack by the Shadow Corps, threatening to send it crashing into Augustgrad. Karax advised Artanis that the damage done to the platform's atmospheric stabilizers could be repaired. The protoss engaged the Shadow Corps while Terran Dominion forces under Commander Jim Raynor carried out repairs.

Game Unit
In the story mode space of Legacy of the Void, Karax can usually be found in the solar core. Here upgrades can be applied to the Spear of Adun through solarite.

A Karax portrait can be unlocked in the game.

Trivia
Tim Morten has likened Karax's role to that of Montgomery Scott from the Star Trek universe.