The Joker is definitely violent. His violence is a key part of his character, used to create chaos and terror. His methods can be very graphic and disturbing.
Not all comics are too violent. There are various types of comics, like those for kids or those focused on comedy or adventure, that have little to no violence. But some genres aimed at older audiences might have more intense action and violence.
The Punisher is known for his high level of violence in the comics. His actions often involve intense physical force and weapons, aiming to eliminate those he deems as threats with extreme prejudice.
Overall, Venom comics can be moderately to highly violent. It depends on the specific story arc and the villains involved. There are often fights and confrontations that involve physical harm and brutality.
It's a matter of opinion. For younger audiences, maybe. But for adults, it's usually within an acceptable range and balanced with positive messages and themes.