Notable appearance: Batman: Arkham City
Based off of the technology created by Mr. Freeze, Batman can use these freeze grenades in Arkham City to subdue enemies, slow down the monstrous Clayface, or create ice platforms to travel on the water with. When thrown, these grenades instantly explode and encase anything around them in a block of ice. This is a quick and convenient way to dispatch one or multiple enemies with the minimal amount of fuss.