These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Narm - The teaser trailer of the film featured over-the-top narration by one of the creatures. Instead of being scary, it ended up hilarious.
The creatures lapse into this quite a bit in the movie, mostly because they do not shut up ever. And sound kind of like Gollum from The Lord of the Rings.
And are small enough to punt across the room.
The second time the homunculi attempted to stab someone in the eye, and missed.
Rewatch Bonus: Watch the film again, and pay attention to the scene where the Homunculi attack Sally in the bath. The camera focuses on two homunculi, an elderly-looking one wrapping its arm around another, smaller homunculus. In other words, Blackwood and his son.
Ugly Cute: Well, of course the Homunculi are hideous, frightening, murderous creatures. But they're also very small and like to patter around. When they aren't screaming, they sort of resemble monkeys.
The Woobie: Sally. Her parents are divorced, and it's implied that she has little to no friends. Then there's the whole matter of the homunculi trying to get her...
Kim as well. She is having a rough patch in her relationship with Alex, Sally hates her, and she initially is the only person in the house who seems to understand Sally. Then she gets her leg snapped and is captured by the homunculi, apparently doomed to live eternally as one of them.