Halloween costume ideas help bring characters we love to life. If your little guy loves Monsters Vs. Aliens, then we have just the costume to make this Halloween extra special. Check out this Monster Vs Alien B.O.B. Costume for Boys. This shiny blue costume will be the talk of any Halloween party this year. Let him dress up in this jumpsuit with large eyeball and matching headpiece for a fun time. Includes: • Shiny blue jumpsuit with large eyeball • Headpiece Special Shipping Information: This item ships separately from other items in your order. Imported.