Images of Fall Out Boy. Fallout Boy happy tree friend style.png|The band Fall Out Boy in HTF form. Fall Out Boy Belongings.jpg|Belongings. Fall Out Boy.jpg|Fall Out Boy, as they appear in the show. Fall Boy.jpg|Sketches of Fall Out Boy. fb1.jpg|Right before the chaos. Fall Out Boy beheaded.jpg|The fates of Fall Out Boy. Fall out boy.jpg|Fall Out Boy as they appear in real-life.