Simmons
From Combine OverWiki, the original Half-Life wiki and Portal wiki
Simmons is a scientist working at Black Mesa. He escapes early into the second day of Black Mesa Incident when he, Dr. Rosenberg, Walter Bennet, and Barney Calhoun teleport to the surface through the use of an old prototype teleport, after which they escape using a Black Mesa SUV. Like his fellow scientists, his fate remains unknown.