An Image of Hedorah in Godzilla: Final Wars.
An image of Hedorah from 1971.
Info.
The roar of Hedorah (also known as the Smog Monster) is one of the strangest sounds in the Godzilla universe, characterized by being a bubbling, squeaking, high-pitched sound.
Hedorah's base roar originally came from Kemular, a poison gas monster from the Ultraman series. For Hedorah, the sound was modified, sped up, and processed to give it a more viscous, chemical quality. In his terrestrial and final form, the roar is deeper and dripping, reflecting its toxic sludge nature, while in its flight form, the sound is usually accompanied by a mechanical or turbine-like hum.
Clean, Full Length and Unedited Link to the Sound Effect
Used In
TV Shows
- Godzilla Island (Hedorah variant)
- Go! Greenman (The Gokinezura's variant used by Tondaile is also used for Gabara.)
- Redman (Modified for Gokinezura.)
- Return of Ultraman (Heavily modified and sped up for Zanika.)
- Ultraman (Debut; Used for Kemular.)
- Ultraman Ace (The original Kemular variant is modified for Garan, Hedorah variant is modified for Iceron and slowed down for King Crab, while the Gokinezura variant was slowed down for Red Jack.)
- Ultraman Jack (Both variants of Kemular and Hedorah are modified for Gokinezura.)
- Ultraman Taro (Modified for Gongoros and the Gokinezura's variant is used for Tondaile.)
- Zone Fighter (Modified for Garoborg.)
Movies
Video Games
- GigaBash (Used for Hedorah himself as a guest kaiju character in Godzilla's DLC.)
- Godzilla (2015)
- Godzilla: Battle Legends (1993)
- GODZILLA BATTLE LINE
- Godzilla Daikaiju Battle Royale
- Godzilla Defense Force (Used for Hedorah himself.)
- Godzilla Movie Studio Tour (1996)
- Godzilla: Trading Battle (1998) (Used for Hedorah in a high pitch.)
- Godzilla Unleashed: Double Smash (2007) (Used wrongly for Titanosaurus.)
- Super Metroid
Shorts
- Fest Godzilla 3: Gigan Attacks (2022)
- Godzilla Vs. Hedorah (2021)
YouTube Videos
- Alquimista57
- Lord Vader Tyrannus
- Nicholas Dodge Animations
- Vrahno
Website Series
- Godziburst (2025) (Hedorah variant)
Anime
- Magic Knight Rayearth (Heard in "The Magic Knights' Greatest Crisis"; Used for a big snail-like creature.)
- Super Electromagnetic Machine Voltes V (Used for the Beast Fighter called "Karakaras" in the 7th episode.)
- Tōshō Daimos
Image Gallery
Audio Samples
Original Kemular Variant
Hedorah Variant
Final Form Hedorah Variant