"Can these vials turn me into something of my choosing, Mom?" Mark said.
"Well, I think this one can but I'm not sure." Mary said, holding up a vial of purple liquid in her dragon claw.
"Well, there's only one way to find out." Mark said and grabbed the vial. He slurped it all down and it didn't taste all that good.
"Yuck!" He yelled out. He felt a tingling sensation all over. His body started to divide or at least, stretch outwards. As he stretched, he grew extra body parts like legs. Eventually, 3 extra heads grew on his widened shoulders, all of the nestled together as their shoulders were a little more than regular human shoulder width.
He (or rather, they) ended up with 4 heads, 8 arms, 4 legs and 3 crotches complete with man packages.
"Whoa! We're like 4 people in 1! Awesome!" One of Mark's new brothers said. It could've been Mark but he was undisguishable from his brothers, now.
"So, boys, what are your names?" Mary asked her new children.
"I'm Max." One head said.
"I'm Mac." Another said.
"I'm Mickey." The remaining one said.
"Well, at least I know my conjoined quadruplets names, now. I love you four." Mary said.