They Might Be Giants Mystery Cache

"Destiny guides our fortunes more favorably than we could have expected . . . . Do you see over yonder thirty or forty hulking giants? I intend to do battle with them and slay them."

Do you feel small and insignificant?  You might if you come to this place.  This cache is a medium-sized container. In order to access the log-book, you must open a 5-letter combination lock inside. (See description below.)

Admire the view, solve the puzzle, trade some swag, and leave your mark on the page to proclaim your victory.

Answer the following question to open the lock:

What is the last name of the side-kick belonging to the famous literary character referenced by this cache?

Please hide the cache again carefully. The lock will open easily if you have the proper combination. Lock it up again properly by closing it on the solution and then spinning the letter dials to reset the challenge for the next player. THE LOCK MUST BE STILL SET TO THE SOLUTION IN ORDER TO SNAP IT SHUT AGAIN.
Congrats to 4 the Fun of It for the FTF!!!!!!!!!!!!!!!!!.