Android.

Fun story from Dan Morrill:

They had a brief flurry of minor popularity amongst the team — enough to pick up the nickname “Dandroids”, anyway. But then +Irina Blok (as I recall) presented her work: the bugdroid we all know and love. Funny how the professional work is of vastly higher quality than the amateur, isn’t it? ;) Even so, these guys have the distinction of being the first proposed mascots for Android (that I’m aware of, at least.)

High-resolution images are on Plus.