Nat Juice is one of the characters from "Beetlejuice: The Animated Series".
He's the husband of Bea Juice and a father of Beetlejuice and Donny Juice.
A critical somewhat grumpy but well-meaning and loving large Frankenstein type man, he keeps telling B.J to "get a job" and is critical about him being unemployed, but it is mainly because he genuinely loves and cares about him, not that he is intentionally stubborn.
Beetlejuice does love his dad as much as he loves him, however Beetlejuice gets annoyed when his father keeps telling him to get a job.