The current Google Android logo is a bug-like robot standing straight. Just like many other company logos, Google did not design the best one first. Below are a few samples of logos that Google considered before choosing the current Android logo. These images were shared by a lead Android engineer named Dan Morrill on his Google+ page. Fortunately Google decided to use a different kind of logo.
Current Google Android Logo:
Google Android Logo Prototypes:
[Source: Droid Life]