Someone who uses his religion to brow-beat others in an especially vitriolic way. A combination of three words, hate, god and robot. A special case of ordinary godbot, who exhibits his/her godbot-behavior chiefly through hate or hateful words. Such as condemning people to permanent torture. Or declaring that some people are sub-human, and not deserving of the usual rights, using religious rules to justify their bigotry.
His continuing insistence that others were hellbound showed he was just another hategodbot.