What does the S stand for

https://pbs.twimg.com/media/DL14l7HUIAAQr3r.jpg:large

https://i.ytimg.com/vi/XqnP5NGLXpY/maxresdefault.jpg

https://i.ytimg.com/vi/08zkpigDduM/hqdefault.jpg

https://i.ytimg.com/vi/kLsriLIZlW4/maxresdefault.jpg

https://i.ytimg.com/vi/6msdD7x2RMY/maxresdefault.jpg

https://i.ytimg.com/vi/t8lQHWl1qqo/maxresdefault.jpg

: SKAARL! COME BACK BUDDY!