Issues deleting an app off Launchpad

Recently I went through my laptop and deleted the apps I don't use to free up space. I noticed in Launchpad, I noticed these four apps shown in the picture (which seemed to be some derivative of Cinema4D).

I have no idea what each one is for and when I tried clicking on them, none of them opened. I then tried to delete them by pressing and holding until the apps began to shake, but there was no x button that showed up. I tried dragging them to the trash bin but none of them would go in.

I then tried to look up the apps on Finder and deleted the associated "tiff." files that showed up, but these apps remained in Launchpad. I'm rather frustrated and I want to get rid of these to free up space and organize my laptop.

Does anyone know whats going on or how I can get rid of these? Any help would be appreciated!