You only need to fit the batteries in the main lightsaber to begin playing. A staple of Homestar Runner Halloween toons is the main cast dressing up as various fictional characters and celebrities, with their costumes typically reflecting the characters’ own personalities in some way. Additionally, the Halloween Comic features a few of the game’s cast at a Halloween Party (presumably at Watchpoint: Gibraltar or another Overwatch base). If you prefer the classics, fat thor costume you can never go wrong with a Jack Skellington costume and parade around the con like it’s Halloween Town.