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He is a glowing green ghost with a long mustache and goatee wearing Shakespearean-like clothes.
He was born to William Krabs and an unknown Mrs. Krabs.
At some point, he invented the spendthrift billfold system, a system to prevent money from being spent.
He later had a son now known as Great Grandpa Krabs.
Role in series
"Pest of the West"
When Mr. Krabs overhears Patrick talking about his famous great great great uncle, Mr. Krabs interrupts and talks about how his great great grandpa invented the spendthrift billfold system, a system to prevent money being spent.
Pest of the West book
He has the same role as the episode.
He is one of the ancestors of Mr. Krabs that he summons against Old Man Jenkins and his family.
- He wasn't a pirate, unlike his grandson.