Many of the Ogdru Hem are without bodies and exist, invisibly, in the air. These evil spirits are used to help raise the Ogdru Hem that have bodies (such as Katha-Hem) out of their earthly prisons.
In ancient times some of the Ogden Hem took the forms of dragons inspiring many myths on Earth.
The Known Ogdru HemEdit
- The Conqueror Worm
- Mister Tod's creature
- Salton Sea Monster
- Vucub Caquix
There have been several creatures that have been connected to the Ogdru Jahad, but have not been said to be Ogdru Hem.
- Sammael the Desolate One: A Hellhound from the Hellboy movie is a presumed member of the 369. While Sammael has more in common, physically, with the frog monsters than with a full-blown Ogdru Hem, he is described by Abe Sapien as the "Son of Nergal", who is one of the seven Ogdru Jahad. One of Sammael's numerous titles, the "Seed of Destruction", is a homage to the comic storyline of the same name, which first introduced the Ogdru Jahad.
- Behemoth: The hydroid-like Behemoth from Hellboy was also possibly an Ogdru Hem, serving as Rasputin's god. Once Rasputin was killed, the Behemoth erupted out from his body, much like Urgo Hem was released through the priest's blood in Hellboy: The Island, and grew to gigantic size. The Behemoth was very similar in size, appearance, and temperament to Sadu-Hem. Hellboy killed it with a belt of grenades through the throat.
- Thunder and Lightning: Two evil Japanese storm demons sealed within the Sword of Storms were featured in Hellboy: Sword of Storms. They can not be considered Ogdru Hem, but rather as brothers to the Ogdru Jahad, whom were referred to as "the Dragons".