Or, as he more popularly is known, Herman Toothrot.
Ronzo took to Twitter today to announce that everybody's favorite hermit (and less favorite grandpa) is back in Return to Monkey Island. Wally Wingert will once again voice him.
Not too much more to say other than that ReMI is shaping up to be somewhat interesting.
Update: A little more say. When asked if Herman would be Elaine's grandfather (as he was in Escape) Ron shot that down and said, "He's back to being just an old crank."