If you take a closer look you'll notice that the baseheads are the same.  It started with a slime then multiplied it but with changed style on the eyes and/or mouth.  This is just an introduction of social slime- the new character to be included in bobot's site.  

Why slime? 

"I made the logo for the site reallygoodseo a robot (holding a spyglass and an "ok" hand sign on the other hand) because robots are systematic though full of technical stuff.  And I thought they are much the same with SEO.  But what is lacking in robot is feeling... because good SEO must have it.  Think of others' feelings. What they will feel with your misleading links and false-promises just for clicks? You will lose them.  And that came up the idea of biological creature, the SOCIAL SLIME. 

These creatures are jelly-like, meaning stretchable and can transform to any shape.  (Ohh my.. yes it's a slime.) I made it that way so it can assist bobot in his adventures, I can't describe it yet but the "transform" thing will sure come in handy.