Square, bulgy, rounded cornders, rumples on his skin.
He just sort of floats around.
One arm on his head to grab food and chemicals.
If there's too much around him, then more arms come out of his mouth.
Once he gets them in his mouth, he mixes them with other chemicals to break them down and turn them into other chemicals.
Once it doesn't taste very good anymore, he rinsed it into his body and turns it into more energy.
Other germs can connect to him and he has an energy pump that they can get energy from.