Edit: The reason I made so many mistakes is simple: I am dumb and put like 5 minutes into researching for this.
This video showcases almost every Doom monster from the main series games: Doom (1993), Doom II & Final Doom (1994-1996), Doom 64 (1997), Doom (2016), and Doom Eternal (2020). If the monster appears in multiple games then each version is shown at once. Couldn't find anything like this online so I made my own. Bon appetit.
![](https://i.ytimg.com/vi/3HT_SAG98tg/maxresdefault.jpg)