User blog comment:SSWerty/Should ST be updated?/@comment-1668079-20110405055021/@comment-1668079-20110405064349

Not too sure who you're talking about with your first question, so I'm assuming your talking about Dark Kai and Serroli;

They head to Namek in an attempt to exterminate the Namekians as payback for killing General Serroli. Well, that was Dark Kai's reason. Serroli's is explained in the next question.

The shade of Serroli is pretty much just a robot. He has no free will, at that point in time, and lives only to be controlled by Dark Kai. Have you ever seen the movie Blade Runner? In that film, there are things called Replicants. Replicants are genetically engineered humans, things that were created by technology. They are shades of a real human, as they have intelligence, amazing physicial ability etc. But they lack emotions and memories, things that really make them human. They only start to understand free will late in their lifespan (4 years), as that is when they have finally built up memories and experiences with which to base their personalties and emotions on. Serroli is pretty much just a replicant. The difference is, he was so single-minded when first created, that he only began to experience new sensations and feelings when he was accidently set free by Goku and Vegeta.