Idea concept of „thrumming“
When Bumblebee gets severely injured after he got rescued from the cons, Ethos seeks him out in the med-bay offering comfort to a distressed Bee. He is emitting a thrumming sound which helps boost Bees repair nanites helping his recovery along. Ethos does a lot of frequency manipulation emitting different sounds that affect the bots around him. A healing thrum to speed up recovery or a calming rumble to help a tired bot fall asleep, most of it happens subconsciously and it takes him years to figure out the whole scope of his abilities.














