Mostly behavioral, multi round, make sure you prep on the company itself and make an effort to be positive and passionate as they value their company culture highly. I would also make sure to know your role details very well and how you could contribute to the company.

Only one round of three 30 minute interviews back-to-back. Interviewers were within consulting, but were not from the office I was interviewing for. Were rather informal, although they varied. A very enjoyable process, if a little strange for consulting.