Frequent mild discreet action violence; people are shot, hit, thrown (some with bones cracking).
Bones are heard cracking once characters hand-to-hand fight at times.
A villain has an alien planet explode outward from inside of him, growing instantly into a massive swirl of vines. We don't see any gore or blood but it's pretty obvious what has happened
Various iconic characters get killed very brutally; either by getting shot, sniped or exploded.
Heads are dismembered, flies disintegrate people's skin that then makes them turn into skeletons and eyes are seen taken out of their sockets from zombies.
An episode includes decapitation, dismemberment and bisections, though these feature either no blood or black blood.
Characters are chopped into pieces, heads and bodies are dismembered with brief gory detail. Other characters are stabbed by hooks and arrows.
Raw bones are seen on zombie's legs and humans body parts.
One character's death (a zombie) involves being cut in half and falling off a train, blood is visible on the item that cut them and (what is most likely) guts are visible on the train tracks for a brief second.