The Not Enough Creepers mod adds 12 brand new elemental creepers to the game. Each of them have a different effect when they explode. They spawn in biomes that fit. For example, the Water Creeper spawns in Ocean and Beach biomes. More creepers will be added in the future, and if you have any suggestions for more creepers to add, feel free to put your suggestions in the comments.
Earth Creeper
Electric Creeper
Fire Creeper
Ice Creeper
Magic Creeper
Water Creeper
Void Creeper
Smoke Creeper
Ghost Creeper
Radioactive Creeper
Giant Creeper (Creative Only)
Mini Creeper