The cyberblosts come from the planet tell us (all about it). They are made of gold, which usually kills the cybermen, and are killed by still, which is what the cybermen are made of.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.