Some fighting scenes, mostly undetailed but with occasional mild bloody detail.

A character gets a nosebleed and a small amount of blood is shown for an extended period.

Some characters are split in half with a fantastical weapon. It's totally not gory but still shocking.

A gem talks about killing the main protagonist, a teen boy.

A character's arm is hit by a toxic waste, which turns it grey.

Greg says, "Holy shhh," a hint that he was close to saying the S word.

Some moderately intense scenes of fantasy threat and some upsetting scenes regarding some characters' backstories.