Strongest person Unicron can beat.

Just as it says whos the strongest being he could defeat.

Also worth noting, all versions of unicron are the same being.

Masterson Thor

I have no idea about Transformers continuity apart from the original series and movie, but are those actual planets Unicron is holding?

I can't say I'm pretty sure that pic is just fanart.

He's able to eat the universe including space itself as seen here.

http://s241.photobucket.com/user/Unlimited_Blade_Works/media/Unicron23.jpg.html

His existence has caused "quantum shock waves" that obliterated galaxies as well.

Originally posted by Aevier
I can't say I'm pretty sure that pic is just fanart.

Thx.
Looks cool as h3ll though.

Ego perhaps...

Originally posted by pym-ftw
Masterson Thunderstrike