What was the name of this tv show!?!? please answer?

There were about 6 major characters. One was an old man who was a wizard, another was probably a young adult male who was very slow, there was a child who was crazy and strange, another young adult female who waas very girly , and they had a nemisis of a pig. I think htey were caveman like people.The childrens parents dissapeared at some point in there llife. It was a cartoon. And I think it was on about 3-4 years ago! Its been really bothering me that I cant remember the name! So if you know please answer(: thanks