|Family||Adrian Frost (son)|
|First Comic Appearance||Seed of Destruction|
Malcolm Frost was a one of three paranormal experts assembled by Sergeant George Whitman in 1944. and present during the "Hellboy Incident". Among these specialists were also Trevor Bruttenholm, Lady Cynthia Eden-Jones, and The Torch of Liberty. After seeing the young Hellboy come to Earth, Frost immediately orders Sgt. Whitman to shoot down the creature, but Eden-Jones and Bruttenholm protected the child.
In 1945, Professor Frost began to travel as part of his research. For the next eight years, Frost would make numerous attempts to have Hellboy destroyed. But when the government gave Hellboy human status, Frost was crushed. He died shortly thereafter, committing suicide.
Frost was briefly seen in the Hellboy Animated film Blood and Iron during two flashback scenes. The first of Hellboy's appearance on earth, where Frost thought that the creature should have been killed. The Second at the end of the movie where Frost tells Trevor Bruttenholm that he does not have to face the vampire alone. In the scene a scrap of parchment like that from "The Right Hand of Doom" can been seen.