"Ya ain't seen nothin yet!" Malcolm said.
With that, he mussed up his chocolate brown hair [which, like his moustache, now had vibrant aqua splotches], and then held his arms out wide.
Nigel, Wilma, and Billy watched as Malcolm's arms suddenly shrunk into his body, and purple dragon wings popped out in their place.
His eyes became black and beady.
His nose shrunk, and his ears grew big and round, almost monkey=like, and moved to the top of his head.
His skin turned pale green.
and finally, his legs shrunk to half their length. His feet remained long and monstrous.
by this time, his hair had completely turned vibrant aqua; moustache and all, and his clothes disappeared.
Malcolm was now a monster!
"Wow!" Nigel said. "Impressive."
"And your clothes disappeared," Billy said, "apart from your boxers."
"Don't you worry bout them, Bill." Malcolm said. "I set my tf to keep my boxers but remove the rest of my clothes."
"You see," he added, "When people become monsters, their clothes disappear, or get destroyed as they tf. But do not worry; the clothes magically return to their owner's homes, as if they were never destroyed to begin with."
"Clever." Wilma said.