Greg The Assistant on Instagram: "JK Simmons first voiced Cave Johnson in Portal 2 in 2012. Shortly after the game released, the custom test chamber editor for the PC version of the game came out and with it came the Perpetual Testing Initiative. This is a collection of multiverse voice lines where Cave Prime has to deal with alternate Cave’s while Greg is his assistant instead of Caroline. This set of voice lines consisted of Half Life references, alternate Portal endings, movie references and
1:21
Instagramgreg_the_assistant
Greg The Assistant on Instagram: "JK Simmons first voiced Cave Johnson in Portal 2 in 2012. Shortly after the game released, the custom test chamber editor for the PC version
40 likes, 0 comments - greg_the_assistant on January 23, 2026: "JK Simmons first voiced Cave Johnson in Portal 2 in 2012.Shortly after the game released, the custom test chamber editor for the PC version of the game came out and with it came the Perpetual Testing Initiative.This is a collection of multiverse voice lines where Cave Prime has to ...
499 views3 months ago
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