Void rivals is the weakest of the 3 brands within the energon universe. It isn’t really stand alone at all, as cameos in early issues have grown into major plot points following either transformers characters or GI Joe characters. It feels like void rivals is almost a mislabel, as it’s basically a vehicle for the crossover plot points. Skuxxoid, the passing mercenary villain in early issues has grown into possibly the most interesting character to follow, but also isn’t currently tied to any main plot (and even his original version was from transformers tv show…so another transformers character steals the spotlight of the “new/original” series in the energon universe). So if I wasn’t interested in what happens “off screen” in transformers (and to a lesser amount GIJoe) I’d probably abandon void rivals.