Since the G1 cartoon started a lot (it's two words people) of concepts have grown to be core to the Transformers mythology. Primus, The Great Upgrade, Sparks, the All Spark, and recently Dark Energon just to name a few. So I'm curious. What is your favorite thing that has been added to the mythology since the G1 cartoon ended? For me, I'm giddy about Sparks. I love them. They separate Cybertronians from mere robots and give them something that makes them believably alive. I also love how it ties into their religion with "Until all are one!". To me it's a fantastic addition and I thank Beast Wars for that concept.