Brother Nero is a character in Wasteland 2.
Brother Locke guards the easternmost gate in the Temple of Titan, and allows access to travellers wishing to proceed beyond.
Locke will tell you to speak with Father Enola in order to have the eastern gate opened, if you didn't accept to hear him out. He won't talk with you beyond that, saying he needs to focus on his duties. If you touch the gate three times, he will become hostile.