It is a type of assassin bug, not cockroach, not stink bug (they look like a shield). There are many varieties of them out there. They are not aggressive to humans, but will bite if handled.

http://citybugs.tamu.edu/factsheets/land...

Not a Cockroach. Looks more like a Stink Bug.

If it is a Stink Bug do not squash it ..They are not called Sting Bugs for nothing. http://media.nbcphiladelphia.com/images/...

No, looks more like a water bug.