It's a type of "what if" scenario and the makers of the short went with the "what if the creature from John Carpenter's 1982 movie "The Thing" existed in the Resident Evil franchise", so this is basically what the animated short movie actually represents by the looks of it. To be honest: i'm glad that it's not considered a canon, because it would probably hurt the franchise a lot and after seeing what the Executer Virus really does in the short movie - it's impossible for me to imagine where the franchise will go if they used that idea for future installments.
The biggest problem that i had with the short was the animation. It's so terrible, even for the time it was released looks horrendous. There are animated movies that were released before Biohazard 4D: Executer like Toy Story, Toy Story 2 and A Bug's Life that looked way better, even those that are starting to show their age and the old Resident Evil games (like Resident Evil 2, 3: Nemesis and Code: Veronica) that have great CG cutscenes that to this day i'm still impressed by them.
I was surprised that it doesn't shy away by showing some crazy gore and disturbing imagery and i'm certain that everyone will enjoy them very much. It had some cool moments and some of the aspects like the shot composition, the editing and the sound are very well done, which made it a enjoyable experience, but the story, characters, dialogue, acting and the music makes it a very flawed short. Even though it's very flawed, i guarantee that i'll watch it again and again in the near future.
