IF YOU HAVE NOT FINISHED SEASON 3 THEN BE WARNED: THERE ARE SPOILERS HERE.
Everyone gone? Good.
So, I think that the twist of Shadowy Figure being Venomous was dumb and forced. If your plot twist has been theorized since the FIRST TIME HE EVER APPEARED then the twist isn't good. Not only was Venomous being Shadowy predicted, but Laserblast being K.O.'s father AND Shadowy/Venomous was predicted. They made it too obvious who Shadowy was and that's why I don't like the reveal. I still like how the series ended. Good show.