Cockroach in context of resiliency towards Nuclear impact is a great name for this DB. But it doesn't sound serious.
Rather, I'm actually curious why you think some cultures may even think that cockroaches are OK.
Cockroaches are universally considered as pests all over the world because they ARE pests, that's how they survive. Look up wikipedia to learn more about cockroaches. They have an entire section describing the relationship between humans and cockroaches, mostly about them being a pest.