(All)
The only way to wake Megatronus up without angering him is by bribing him with food, not even Soundwave knows this but Orion was the one who managed to accomplish this.(TFA/G1)
Starscream will randomly start to dance by swinging his hips with his servos behind his helm. When he does do this TFA Starscream gets caught by Megatron while G1 gets caught by his trinemates.(All)
When Ravage was still alive, Soundwave would have cat food storaged anywhere and when alone with Ravage he will feed him.
CZYTASZ
Decepticons HCs
LosoweHead cannons I have about the Decepticons in the Transformers franchise. You may add in your HCs about them too. It'll be in G1/TFP/TFA normally.