Avoid this series like the plague, this series is that harmful to your health.
The voice acting is horrible, a 150 foot tall robot sounds like a 13 year old prepubescent boy. The creators put no effort into editing the voices to sound anything robotic and the sound actors didn't try to alter their voices to have any depth or feeling to them. It literally sounds like they asked people off the street to say some lines and used those as the finished product.
The story has absolutely nothing to do with the Combiner War comic story, they merely took some characters from the series and made this horrible addition to the Transformers universe. From the beginning a single transformer was hunting these combiners that could ruin whole worlds by themselves, does anyone see a problem with this? A single robot is fighting an enemy that apparently whole cities and planets don't seem to be able to handle adequately. The story tries to make the combiners a threat but from the first episode they are nothing but a joke, like this series.