In the beginning of the movie it shows a woman in a white gown. Cleavage is shown.

Non stop violence from the beginning to the end.

A man's jaw gets broken and then eaten by a large boar-like creature. Very graphic but not too bloody.

A man gets crushed under a giant wooden door. The result is a pool of blood.

A man's head gets suddenly severed and is seen going underwater with a lot of blood.

A person is facially de-gloved by a demon. (very graphic, although very brief.)

Baba Yaga eats children. Some hands of children are in her stew and when Hellboy looks back he sees two corpses of human children hanging from the ceiling.

A large creature picks a man up and tears him in half vertically, spilling his guts everywhere.

Very strong bloody and graphic violence throughout.

A pig like creature kills multiple monks offscreen, blood and limbs fly onto a wall. This scene isn't too graphic, because it is dark, and you really can't see anything

Gruagach kills the Osiris club offscreen. We see bloody corpses with tons of blood and gore everywhere including a decapitated head. The last corpse has her neck twisted 720 degrees. The scene lasts 2 minutes and is very graphic, focusing on the gore.

Nimue can spread a plague that removes a person's flesh within seconds. In the beginning we see multiple corpses in black and white. Later on we see her kill people in the city, but with how its shot, it's not that graphic. Shortly after we see a bunch of corpses with bloody detail, however it is brief.

A vampire falls and his chest is impaled by a wooden pole. Graphic

Many people are shot and stabbed. Bloody

Extremely bloody and gory throughout.

Since almost nothing in this film is taken seriously, the violence, though gory, is not too disturbing and often has a comedic tone to it

Competitor for most gory superhero movie of all time. Every injury or death is accompanied by blood spurting, limbs and intestines flying everywhere, faces, hearts, and eyeballs getting ripped out, and people being torn in half. Very different from superheroes films from the DC or Marvel universe

When hellboy gets the sword from the stone, monsters come from hell and began terrorizing the people. Innocent people get impaled through the legs, eaten, or smushed all to death.

There are 35 uses of "Hell", including other derogatory terms.

Gruagach swears many times in one scene of the movie.

God Damn is used several times. Religious swearing and many F words throughout the movie.

Bitch, Shit and Bastard are used a few times

Hellboy frequently gets drunk and is often seen drinking tequila.

Some smoking and drinking in a bar.

The movie never takes itself seriously, so many scenes are not overly frightening. However, many of the monsters/creatures are extremely odd and creepy, and behave in the same manner.

Hellboy's appearance may be frightening for some.