Harold Pierre Hatecraft

Harold Pierre Hatecraft, shortened to H.P. Hatecraft, was one of Mystery Incorporated's closest allies and famous horror writers.

History
Gothakon]].
 * 7: He complemented how weird music was these days.
 * 8: He went as one of his creations to the Royal Knights Faire.
 * 11: He went to a French restaurant for French people only, claiming his middle name was Pierre and he had French background.
 * 12: He helped Mystery Incorporated solve the mystery of [[Char Gar
 * 13: He wasn't allowed to enter the Cicada Bug Festival, but Mystery, Inc. invited him in as they were 'celebrities'.
 * 14: In Scooby-Doo's dream, he was annoyed that he and his imaginary mystery solving friends didn't get kidnapped by Lord Infernicus, who burnt him in response]].
 * 16: He was hypnotised by Aphrodite and danced with a rival author Regina Wentworth.
 * 19: His books were seen on Vincent Van Ghoul's bookshelves.
 * 20: At Destroido Corporation he hung out with Shaggy Rogers and Scooby. He visited the Oil Rig only once with the gang.
 * 21: The gang saved him, a victim of the Manticore.
 * 24: He went to Skipper Shelton's clam cabin, and Shaggy pushed him into the ocean.
 * 25: He helped the gang solve the mystery of the Obliteratrix. His first name was revealed and he started dating Natasha Fenk.
 * 26: He witnessed the unmasking of the Freak of Crystal Cove.
 * 29: He was kidnapped by the Crybaby Clown.
 * 31: He was invited to Brad Chiles and Judy Reeves' welcome home party.
 * 32: He enjoyed the music at the art museum.
 * 33: He watched the movie in the Crystal Cove Cemetery
 * 36: When his girlfriend was kissing Don Fong, Daphne Blake said to Fred Chiles-Reeves she thought Fenk was dating H.P.
 * 38: He went to Desdroido and witnessed the unmasking of the Scarebear.
 * 41: He watched the play at the theatre and said to the gang they did a good job, and then witnessed the ghost of Gabriello Serra speak to the gang.
 * 43: When the Skull Cattle attacked Crystal Cove, he said goodbye to the gang before getting crushed to death by the cattle, despite their efforts to save him.
 * 52: In Post-nibiru, he was seen high-fiving Regina Wentworth.

Appearances

 * Episode 7
 * Episode 8 (silent cameo)
 * Episode 11
 * Episode 12
 * Episode 13
 * Episode 14 (dream)
 * Episode 16
 * Episode 19 (mentioned)
 * Episode 20
 * Episode 21
 * Episode 24
 * Episode 25
 * Episode 26
 * Episode 29
 * Episode 31
 * Episode 32
 * Episode 33
 * Episode 36 (mentioned)
 * Episode 38 (silent cameo)
 * Episode 41
 * Episode 43 (death)
 * Episode 52 (Post-nibiru)