Red Menace

Red Menace is the youngest brother of the Slaad Boys but is also one of the nastiest. When a Red Menace claws a humanoid creature, it can inject an egg from a gland under one of its claws. The egg works its way into its host and gestates, eventually forming a slaad tadboy. Such a tadboy then eats its way out of the host's body, feeds on the host's remains, and then seeks any other fresh meat it can find.