My pet theory is that, by the time alien lifeforms reach a level of tech where they COULD contact other planets, they have evolved ethically to the point where they realize intelligent, environmentally adaptive lifeforms like themselves (and us) cause so much ecological destruction by nature that they are the environmental equivalent of malignant cancer, “do the right thing” and voluntarily disassemble as much of their tech as they can, destroy all of their records and knowledge, and then commit species wild suicide.
Well, I assume ALL of them take their name from Capri in Italy, a famous costal resort town. Same as Insalata Caprese (sliced tomatoes, fresh mozzarella and fresh basil, drizzled with EVOO and [usually balsamic] vinegar.)
The monster considers Frankenstein his father, so he’d use his surname. The creator is Victor Frankenstein (He’s NOT a doctor, he never got his degree), the monster is Adam Frankenstein.
I am reminded of Arthur C. Clarke’s Childhood’s End, where the aliens look exactly like out images of demons/devils.