Blake is going to be stuck outside. She can try to use her teleport to get inside, but of course it isn't going to work.

Chris is going to be locked out too, and willing to try and get inside with his assorted animal shapeshifts. Other than that, he can always be support.

Nicolas is going to be locked out, and can use his healing powers on anyone who gets a bit too banged up trying to get back in, if need be.