He doesn't really need a big mouth, I mean RC talks for him.

But on the lighter side of things, he does have one its just a tiny slight.

 

He doesn't eat. Why must he have a mouth?

 

Ugh, I'm so late.

But mad, insane props all the way for making an amazing reference. Whoever you are, you're my bro.

 

Maybe his mouth is like Wasps.

 

I can't believe i never noticed that he had one. Again he never speaks and his mouth is almost an illusion like how at certain angle Energon Prowl has no head.

 

yes he has a mouth but why would he need to move it? it was more noticeable in rescue bots when he was shocked the slit would gape open.

 

It would stand to reason that that yellow kibble on his jaw was added by Ratchet during the procedure. If he were to talk, the jaw would open as mouths do, and his mouth would expose it'self from behind the upward section of the kibble.

He's not going to talk though, because Spielberg wanted bumblebee to be ET.

 

I guess it'd look weird to see a mouth, hear bleeping and blooping, but not see the mouth move.

 

So that he would look less like a deer in headlights. I can't stand his head design.

 

He wouldn't stop turning tricks, so the autobots had to remove it.

 

cause you don't need a mouth if you're just going to make stupid noises (only he didn't have one when he supposedly could speak either..   )
just say somebody stole it..

 

Keeps him from kissing and telling.  

He has a 'mouth' but his helmet design seems to cover that area for the most part.

 

He has no mouth so he cannot speak...

 

He has a commnicator and a mouth. We just can't see the mouth because of the communicator. His face could also be so scared that he eats in private.

 

You can clearly see his face goes down into some kind of lip mouth shape, he probably covers it up because he doesn't want it to be seen.

Blind people wear the glasses, some people with no eye wear the patches, people with missing body parts sometimes wear cosmetic prosthetics that serve no purpose but to cover up missing limb so people don't stare.

His mouth may be all welded or stitched shut.

 

The other Autobots don't eat either, so why would they have mouths?

 

I'm in the facemask/helmet camp. That's my vote.

 

Exactly. Shockwave speaks and he DOESN'T have a mouth 

 

to help emulate emotion.

why do transfomers cockpits/steering wheels/seatbelts?
soo many questions.... its like saying "its just a movie" as a answer to why

and lets not get started on "female" transformers

some questions are better left unanswered.

on a side note: predacons and maximals in Beast Wars Ate food AND took energon.

 

I sort of agree with that, but it could possibly be the replacement parts they had to hand when he'd lost his voice, perhaps his jaw and whatever sustained an injury and they had to rebuild it.

This post has made me like Bumblebee more than I did before, the way you see it, it's quite sad.