Adventurer Rick Spartan is an explorer. He is Fred's idol. He has gone on countless missions. Not too bright, but he knows how to get out of a good trap. He was featured in the episode Attack of the Headless Horror.
In the episode, he had just found a cursed, shrunken head. It's headless body was chasing him around and eventually got him in the hospital. He found out it was his wife who wanted him to stop exploring.