Blast Box

The Blast Box is an Explosive Crate in Super Smash Bros. Brawl. When broken, it will either explode, or let out a poisonous gas, either dealing 40% damage. The person who throws it will not take damage. The box has a chemical warning sign on it signaling easily ignitable substances.

Trophy Information from Super Smash Bros. Brawl
''An explosive-filled box that will detonate when the box is broken. The box can be smashed with normal attacks and will also catch fire and blow up if it's exposed to any flame. Unlike ordinary crates, blast boxes do not change their appearance from stage to stage. There's one fundamental rule when dealing with these items: be out of range when they blow.''