Simelaet

Ok, I decided, I intend this one for the contest is having

Simelaet
Alien creature
Size: variable, but with limits.
Mass: without extra objects estimated and 10,000 tons, fully armored it can be over three times that.

Bio:
Coming from some unknown alien world, it arrived on the earth in the center of a very peculiar meteor. As it streaked into the atmosphere it broke apart, strewing wreckage for miles, wreckage of all kinds of metals, rocks, skeleton parts and the shells of armored alien creatures. No one knew what to make of what happened, until the creature appeared.
Gelatinous and hardly able to maintain a consistent form on its own, the creature is not naturally equipped with a strong offense or even really defense when it comes to attacks involving extreme heat or cold. However, it can hold onto solid objects to assume a basic form, hold them onto it, and fire off parts it’s absorbed at high velocity as an attack. The creature’s true form seems utterly devoid of all organs and it’s believed that its whole structure cooperates in all life processes. Physical attacks either bludgeoning or slashing are all but useless, at worst scattering parts away for a moment, but most energy attacks cause it great harm.

One picture shows it in its natural state, another as a early-stage slug-ish thing, one was made with the idea that it’s formed around the skeleton of the original Godzilla who was killed by the oxygen destroyer, adorning itself with parts from kaiju and earthen mecha. The largest picture is a possibility of something it hobbled together from its meteorite shell, alien bones and shells are mixed in with the ancient war machines of other worlds that failed to defeat it millennia ago, breaking bones and twisting metal to fit things together as tightly as possible to maximize its defensive coverage. Also it's tail-pod thing opening to reveal armed tendrils for a different attack method.
Of course I know other artists could do a lot better with this concept, make it take far more interesting and bizarre assemblies.