I don't know what your experience has been with ENTJ peers, but you should befriend one, as they're a lot of fun. My personal experience with 3 ENTJ peers has been stimulating, not intimidating.
The scariest type would have the ENTJ's power without their open-mindedness. The ENTJs I know will consider any idea once, provided you have reason and evidence to back it up. This makes them safe. Perhaps an ESxJ who's gone bonkers would be scariest.