And do what
with it? How does this knowledge benefit him? How does he use
the info he collects? Or does he collect info on various planets for the sake of collecting it?
I don't know if this is the right term or not but Brainiac sounds like an obsessive compulsive.
Collecting info on planets for the sake of collecting it makes as much sense as hunting for sport.
Do you understand what I am asking?
Characters, good or bad, have to have a reason for doing what they do. Their motives need to make sense.
The Riddler always leaves clues in the form of riddles for Batman and the Bat Family to solve, like he wants
to get caught and thwarted. That makes no sense. That sounds like a big weakness.
Bizarro is a villian in the sense that his thinking is warped and he doesn't realize that he is inadvertently causing more harm than good. In his mind he thinks he is doing the right thing.