Varian

Varian was the name of the Toa that "The Shadowed One" had trapped in a stasis tube. Currently, the element, tools, color, and gender of this Toa remain unknown.

When everyone left the Matoran Universe, it is also unknown if anyone or anything freed him or if his tube was retrieved.

Trivia

 * Greg Farshtey created Varian out of a list of gender-less names.