NOTIICE the ears & face in the "S"...
That is actually related to the previous Android version (interactive) EASTER EGG.... That's the one where you can collect a pretty large brood of CATS - that you feed/ play with some random number of times before yet, another new cat appears. I know if you swipe down 1x to access menu - the DEVICE CONTROL option will open the hidden 'app' (possibly though, IF you haven't ever accessed that Easter Egg I'm not sure of anymore, after the fact) BUT I can also say that once run - not sure you can ever get rid of it, unless maybe reinstalling/overwriting that previous Android version- at which point you would need to also reinstall every other new/updated versions that followed.
In any case, knowing what it is, you at least have a starting point to search for a more specific solution... sorry