1- Hello, welcome, why don't you take a seat?

Starting with singular events and further escalating, Soundwave slowly slides down the cliff of treachery and eventually defects from the Decepticons.

Title from Machine by Imagine Dragons.
Previous title: Soundwave Defects

I haven't finished watching the show so some characters may have characterizations closer to other Transformers media!
This is cross-posted on ao3 under the same title.