Robo-Priest

Robo-Priest is a robot (likely designed by Elaine Klein) that ministered Benjamin Dwayne and Elaine Klein up until it 'bugged out'.

Biography
Believed to be made by Elaine, Robo-Priest married Benjamin and Elaine. However, just after pronouncing them man and wife, he shook and blurted hypnotic sounds, those sound being very much like those of the band twenty years later. Everyone but Elaine and Benjamin are effected. In the violence that ensued, he very may well have been destroyed. He is clearly a robot, both looking drastically different and talking through dialogue and not voice.

Behind the scenes
There is an ellipsis between "husband and wife", in the video's description. This is an odd detail, which could be important to Elaine and her character's true story.