Langdon Caul
Others Abe Sapien
Abraham Sapien
Ichthyo sapiens
Personal information
Species Human (originally)
Ichthyo sapiens (currently)
Gender Male
Affiliation Bureau for Paranormal Research and Defense (B.P.R.D.)
Relations Edith Howard (wife, deceased)
Occupation Paranormal researcher
Current status Active
Body type Humanoid
Height 1,9 meters
Abilities Underwater breathing
Superhuman strength
Healing factor
Sentience Sentient
Sapience Sapient
Behind the Scenes
Universe Hellboy
Created by Mike Mignola
Designed by Mike Mignola
Performed by Doug Jones

Langdon Caul, a.k.a. Abraham Sapien is a paranormal investigator. He is often an ally of Anung Un Rama.


Abe is a humanoid amphibious creature. He has a pair of gills on his neck, allowing him to breathe underwater, but also has a set of normal human lungs allowing him to stay above and out of water for long periods. However, he does need to regularly "get wet" to keep him from becoming too weak. Abe possesses webbed hands and feet, and has large, bright eyes that help to see in murky, thick water. He has distinctive black/blue stripes vertically overlapping his forehead in a shape reminiscent of a "V", and easily ranks as an Olympic-level swimmer, if not actually surpassing that measure, thanks to his highly athletic physique.


  • Doug Jones would later play another amphibious humanoid in The Shape of Water.
  • Abe Sapien's species was originally identified by the binomen Ichthyo sapiens, before his past was uncovered and it was found that he was originally human.
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