The show starts great, new and refreshing plot, interesting characters & well made Visual effects, and kept well written until seasons 1 finishes.

After that, same old typical Hollywood shows, got dragged up to make more seasons & more money, which drastically affected the Quality of the show in all aspects.

They tried to make up for the pathetic situation with needless extreme scenes, either Graphical violence or explicit & pointless scenes, just to make weird situations. Even made some crappy scenes in terms of visual effects, seemed very rushed & fill in gaps & minutes.

In summary, just watch season 1 & stop, go watch something else.