zooming in on that last bit we see of everyone during the outro pan out gives us a lot of insight on their reactions- especially breadhead's and mud's which we don't see during the hatching scene.
based on body posture and the expression I can make out, Mud's obviously PISSED; we'll have to wait and see to what extent. really hard to tell which direction it'll go with him either becoming suspicious or just pissed that it didn't go to plan- possibly not caring about the fake human egg, just that he wasn't in on the lie.
breadhead just looks timid and scared. I know it's already a common hc that he already Knows so his reaction of fear makes sense.
ken is really interesting. he just looks so.. sad and resigned. it'll be really interesting to see how he handles all of this.
all in all intriguing as fuck and I can't wait to see how this plays out.
p.s. I hope Mel keeps the angel hatchling as a little pet that thing is so cute.