Hey,

It sounds cheesy but you fundamentally should be yourself as much as you can - If you're yourself and you didn't get the job, it wasn't a good fit for you and you saved yourself years of not enjoying where you are. If you're yourself and you got the job, you're much more likely to be happy to be there! You can force cultural fit...

That being said, in a case the generally look for someone who is both confident and can take guidance. Someone who leads but can also brainstorm together. Someone who is logical and well structured but also shows passion/interest. These are general, and specific traits can be both intangible and vary form company to company, office to office, interviewer to interviewer. So, I refer back to the first paragraph :)