Lucy should have this. I don't think Korosensei has what is needed to pacify her, and they are around the same power level theoretically, but I don't think it's ever proven whether Korosensei actually did what he did to the moon. Wiht Lucy, we have hard proof that her vectors can grow to encompass the Earth, so when I have to go and pick between theoretical tentacle power and proven tentacle power, I'll go with the one that has cold, hard proof.