[FULL GAME SPOILERS] Who were the Monsters?

[AleNes]

I get the feeling that Nr2 (Discoball head) is supposed to be Adam Golaski (the guy who appears in the video and drinks structure gel in the end) since
1) the video is set in Lambda station where we encounter the monster first

No. The monster at Curie is a man but the monster at Lambda is a woman. I figured that out through the game editor. It's 100% info

I can try to make a screenshot if you want proof.