Mr. Krabs, Tori and Cat Relationship
Mr. Krabs is very fond of the girls and finds them to be nice, interesting young ladies and acts as an uncle figure for them at times. At first when they first came to the restaurant, he didn't appreciate them coming there and them not having any money to pay for ordering a meal but Spongebob insisted paying for them.
Krabs, who wasn't very friendly towards them at first, then tells them next time they come here, they bring their own money to pay, if not, they can never come there again but after they stopped Plankton from stealing the Krabby Patty secret formula, he changes his attitude towards them and tells them they are welcome at his restaurant anytime but still hasn't changed his mind about them paying with their own money since he's very strict about that.
Despite him having a soft spot for the girls, it's not surprising he also sees them as money makers after finding out they're really talented at singing, dancing and performing, not only that, they are human girls that can breathe underwater, what sea creature wouldn't wanna see that?
Sometimes he has them do this occasionally at his restaurant just so he can keep his business running. One time he had them do this for almost a month to the point he overworked them by making sure they rehearsed before show time, and with minimum pay, which isn't surprising either considering he doesn't give his own employees high pay.
He had stopped after the girls put their foots down and told them how they couldn't do it anymore because it was almost taking over their personal life, making them burnt out and drained. He realizes this and actually apologizes to them. He offers them an agreement to only have the girls sing and perform on special occasions from now on if he really needs them. They like this idea and agree to it, he even considered raising their pay a little bit but not too much.