Squilliam, Tori and Cat Relationship
The girls absolutely cannot stand Squilliam and it's obvious why, he thinks he's better than everyone because of his wealth and because he's a total jerk.
Squilliam had once met the girls when he stopped by at the Krusty Krab to bother and gloat to Squidward about the great things that had recently happened in his "happy and successful" life while also hearing talk about Tori and Cat being two human girls that perform there and want to see it for himself to see what was the hype about.
He watched them perform and is honestly impressed by them. After the show was over, he says to Squidward that it's sad that two young girls are "more talented" than he is considering they are still in high school and he's stuck behind a cash register. Cat sticks up for Squidward after that but Squilliam mocks this as Squidward feels embarrassed.
How he feels about the girls? He can't deny their talented but he also can't help but throw backhanded compliments at them and sometimes he can be kinda rude to them. Cat and Spongebob have to hold Tori back to keep her from trying to slug him, Squilliam told Cat to control her "wild animal", referring to Tori just to make fun of the fact she has a bit of a temper.
Most of the time, he gets their names wrong and mistakenly calls them "Lori and Nat" much to their annoyance. He obviously know their actual names, he does that just to get under their skin.