Theory: What if Dr. Magnusson is supposed to be partially based off of the Slick scientist from Half-Life. Except way older of course. I know that Magnusson's face was modeled after Paul Eenhoorn, but that doesn't mean this theory is completely debunked. Dr. Kleiner's face was modeled after Ted Cohrt, who by coincidence just happened to look like the Glasses scientist from Half-Life.
(Edited)
You know, you could be right on that one 🤔