User blog comment:BackToTheFuturama86/Chucky vs Lots-O-Huggin' Bear. Epic Rap Battles of Villainy Season 1/@comment-5393732-20150426145028/@comment-25263388-20150427011518

IDK how I forgot he used Vader, it is literally in the only other battle :P

Zim's alien backpack has three tentacles he uses to walk, shoot lasers and other such stuff