Before Android was released to the public, Dan Morrill was working on the project and needed some eye candy for a presentation, so he decided to create some mascots for the unreleased OS. Nicknamed "Dandroids" by the team, they look vastly different to the current, somewhat futuristic Android mascot, and look crazy enough that they"d probably scare kids.
It"s an interesting look into the early designs related to Android, but we"d hate to think what would happen if these mascots were still in use today.
Source: Dan Morrill (Google+)