It's not a monster. It is Edvard Munch's birthday today. He is guy responsible for the famous painting The Scream. http://en.wikipedia.org/wiki/Edvard_Munch http://en.wikipedia.org/wiki/The_Scream
The G's there its just harder to spot. I like it, but yeah kinda creepy, not really the happy colorful Google logo everyone's used to.
I just came to post a topic about this, clicking on that logo takes you to search results with two naked paintings in the image search result ( displayed with the web results ). Should'nt google warn kids about that some how?
The paintings name is "skrik" (in Swedish, this is an imperative. I don't know if its the same with Norwegian) , usually translated "the scream" but related to the English word shriek.
I saw that a while ago, it would be changed soon, maybe they would put anything to their logo even in holidays and special days