Slickward Tentacles is the new and an alternate version of Squidward Tentacles. He hates ScumBob and Patjerk and is shown he wants to murder them. Slickward is the most measurable guy in New Bikini Bottom. ScumBob appears to have a crush on him.
He alternated places with the real Squidward a few times during Seasons 4-5 but officially replaced him in Seasons 6-8. Starting in Season 9 Slickward alters places with the real Squidward like in Seasons 4-5. Slickward appears to be meaner and more torture prone than the official Squidward. The writers at Nickelodeon and Viacom Inc. love to torture him.
His most memorable moments is when ScumBob ripped his toenail off when Slickward told him to move his couch. ScumBob once tried to give him a happy memory but was really trying to torture him. Onetime ScumBob even tried forcing Slickward to go inside his house by stealing his vacuum so they could have sex.
Another main difference is Slickward's voice is deeper then the actual Squidward.