The cheated garden gnomes, or as it is abbreviated in Candy Box, CGG, are the only enemies that appear in the developper's garden. They stand at the end of the level, grouped together in a large quantity. It has 70 hit points and its weapon is the ultra plasma gun, making it the only enemy to possess this weapon (with the exception of the bug having a random weapon).
The ultra plasma gun is a range weapon. The nearest CGG will be shooting at you on every turn, dealing 30 damage regardless of your invulnerability status but will not reduce you to zero. When at point-blank range, they deal an additional 8 damage which can kill you - unless you are invulnerable.