Mactonic won’t dissapear off activity monitor?

I didn’t download anything but suddenly a mactonic app started. So i force quitted it and removed it off of my applications. But when i checked my activity monitor, it said tonictasks were still running. I tried to force quit that from acitivity monitor but it took 6 tries with it still being there but in a lighter colour. When i went back to it after restarting my computer, it was still there and i couldn’t force quit it. What should i do?