Unicron versus Galactus.

Unicron is the transformer version of Satan, he battled the transformer god primus at the begginging of the universe after he litterally ate the last one.

The battle cause the big bang and both Unicron and Primus were damaged and transferred their essences into planets which evolved into mechanical transforming bodies.

This is chronicled in Transformers Volume 1 issues 74#-83#

Offtopic question, Do we know what Primus looked like as a transformer?

Before he became a planet he looked like Rodimus Prime, afterwards much different they actually made a gaint sized action figure of Primus this year which shoudl be in stores soon.

Originly in the first Transformer comics Unicron was the last God of a former creation that he completely and utterly destroyed even the energy that made it up nothing was left. The next one came after a burb basically.

Unicron wins, if Big G was fully powered would be a good fight prob.

Primus robot mode

One of the rescent official fan club comics states that Unicron can unwrite the laws of physics just by willing it. By doing this he can unravel whole galaxies in moments.

Unicron wins this, but considering Galactus' power it won't be easy.

i was wondering about this the other day, ive seen heaps of unicron vs galactus threads, and they all end up with comic unicron, whos pretty much a deity in the transformers universe against galactus. im curious about movie unicro, vs gah lak tus, the ultimate universe galactus. both are living machines of planetary proportions, and neither have their more potent abilitys like the power cosmic, and some of unicrons more unscientific powers.

Galactus wins in a curbstomp.
wiping out the Transformers universe is hardly an achievement. Hulk could thunderclap that one do death!

Unicron would struggle against any low-end Herald level beings, even the Human Torch would rip great big effin holes through him.

Galactus merely has to think about it for a nanosecond and Unicron's toast - and toaster!

Unicron ftw.

Unicron would destroy the universe and Galactus all at the same time.

how?
Unicron was getting blasted by the transformers, what would happen if he met resistance from say The Silver Surfer?

Galactus would tear unicron apart. Unicron is inferior technology