Hedorah

Hedorah is a formless alien pollution-absorbing creature that appears as one of the antagonist monsters in IDW's main series Godzilla and also appears in a few of IDW's miniseries.

Name
Hedorah's name comes from the Japanese word hedoro, which refers to vomit, sludge, sewage, or chemical ooze.

Appearance
Hedorah has a blob-like body that is generally dark blue in color and two large red eyes. Hedorah does not appear to have a mouth. Hedorah can also configure his body into a saucer-like shape and fly by expelling sulfuric mist.

Personality
Hedorah kills everything in his path with no remorse and releases deadly toxic substances that make areas he passes through uninhabitable. However unlike the other evil monsters, Hedorah does not seem to do this simply to cause death and destruction, but as a byproduct of his toxic bodily functions.