Welcome to Half-Life Answers. What would you like to know?

He gives many hints throughout the half life series about the crystal sample at the lab, and may have taken it from black mesa in order to find a way to reverse the xen portals, not knowing if the portals would go away ever.

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.