I think sierbertron asorbed some of earths air in the ultimet doom.

They Need to have air intakes So they get the air through their mouths like most organisms

I think sierbertron asorbed some of earths air in the ultimet doom.

Wrong. If Cybertron got THAT close, the gravitational differences between the near side and the far side of the two worlds would have shattered them BOTH, not to mention that a planet can't 'absorb" air.

Its Scifi. :tflaugh Not asorbed but mabie seibertron's gravay stole some of earths.

2 more references:

 

In G1 ( i think its in: More than meets the eyes), Hound goes underwater to stop Rumble in water, and he puts a mask on his face. But in the water... Rumble doesnt have one....

 

In Energon, when Ironhide is trying to combine with Jetfire, Jetfire tells him to synchronize his breathing........

Energon is different from G1. it's modeled after Digimon.

I don't think so?

what ever, in ultimate guide it says cybertron has an attmousphere

cause in bm there used to be organinc life

if Cybertron didn't have an atmosphere, it wouldn't exist.

Atmosphere's PROTECT the planet...it would crumble apart, burn, melt, etc...Also, in Energon, Cybertron seems to have artificial daylight now.

The surface looks like earth, with a blue sky.

 

They aren't breathing, they're cooling their internal systems...they overheat like any piece of machinery. The harder they move, the more air they need to cool their systems.

 

And Energon isn't modeled after Digimon, shove your G1 puricism. Energon is modeled after Japanese robot shows..Victory, Brave, Goa Gai Gar, etc...

but in turn they r not machines but living beings so they must need air to recharge and take in nutrients to repair there bodies