Frankenstein was first published way before utilizing of electricity as an energy source was done and how at the time, it was unprecedented. Occeus' own research and results in bringing the dead back itself is seen as unprecedented and suspicious
Occeus, unlike Victor actually names Rogi because he is genuinely the most proud of him, whereas Victor not only calls his creation "the creature" because he didn't give a name, he regards him with sheer abhorrence and disgust and terror