The Rat King needed a name. He had evolved. He knew more now... somehow. And amongst all the new things that he'd "learned" the most important was having a name. A name held power. A name held identity. He was no longer one amidst a trillion rats! He was now one amidst a billion or so humans...
'How are humans different from rats?' Except of course the way they looked. This was another thing he'd "learned" and was having a hard time getting used to. Walking on two legs. How does the physics of that whole interaction even work? It was like you were constantly tilting and falling over, but using your hind legs to stop it from happening. It was disorienting.
He carried the bundle of disembodied arms and dropped them on the ground. He took the thickest of the bunch and started to slap it hard against his tailbone.
"ATTACH!" He yelled
"ATTACH!"
"ATTACH!" Flesh hit flesh until flesh joined flesh irreversibly.