None of those. They specifically say during the episode that Unicron has transcended physical form, meaning he can shape the earth into what ever shape he wants.
He's the earth's core. My guess, just add the inner and outer core of the earth together and you get him. He's probably close to the size of earth's moon. Maybe a bit smaller or bigger. He might even be bigger if he makes up part of the mantle as well. Sources: Inner core - Wikipedia, the free encyclopedia Outer core - Wikipedia, the free encyclopedia
If he transformed and assimilated the rest of the mass of the earth attached to him, (which he clearly seems to be able to do) that would put him at Earth sized. If we're going with a G1 moon sized Cybertron, then that makes this the second biggest Unicron in TF history. Behind the G1 comics Unicron who was scaled to a much larger Cybertron.
The way Ratchet was talking about him at the end of episode 24 it sounds like he extends close to the surface in some places. Depending on the position he was in when he collected debris his arms and legs could make up part of the mantle.
Yeah, he's big. He could possibly be the same size as he was in the original movie. Maybe even bigger.
just wondering, even if unicron is only a third the size of midgard would he still be considered planet sized or moon sized?
He's not the entire earth, though - just certain parts that are rich in iron ore. Ratchet explained that.
Size is fairly irrelevant. The definition of a planet is: Unicron fulfills A. I suspect he doesn't fulfill B because then he would be unable to change into a robot form due to his own mass. This applies to the 86 Unicron as well. Actually scratch that, the 86 Unicron definitely does not fulfill this. He has a LOT of HUGE spikes. As for C well that depends on if you want to include Prime Unicron's outer crust as part of him, which I suspect we should. Until further evidence presents itself we should assume that yes, Unicron is a planet. Should we see his physical form not demonstrate a spherical nature or should his body leave a stable orbit he shall cease to be a planet. IAU definition of planet - Wikipedia, the free encyclopedia
I meant irrelevant. I didn't check to see if my spell checker actually used the correct word apparently. Yup, I'm a moron. But yes, assuming his size is large enough for point B then he could be moon sized or Jupiter sized. It wouldn't matter for the title of planet.
Seismic measurements show that the core is divided into two parts, a solid inner core with a radius of ~1,220 km -Wikipedia, Earths Core There that's Unicron
This really depends. Pluto got taken out of the list of planets because of this. Source: Pluto Not a Planet, Astronomers Rule Hence, size does matter. If Unicron is going to be considered planet sized, he's going to have to comprise more of the earth. He's going to have to be at least the size of Mars.
Unless if those were just extensions, like wings or long spikes and such, sproutin' off the main body?
