Greg
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Originally written to appear during Portal 2, Greg was a scientist and a friend to Cave Johnson. Though what role Greg may have played is unclear, he was replaced by Caroline before the release of the game.[1] Therefore, Greg may have been an assistant to Cave.
Overview
Greg may have been cut to eliminate the cost of hiring a new voice actor, instead using Ellen McLain to voice Caroline.
References
- ↑ Portal 2's developer commentary