Wartle is a slaad lord, a rival of Ygorl. Ygorl defeated him and imprisoned him in the form of a meteor, casting the meteor toward Celestia in the hope that this would destroy him. The chaotic aura of the meteor caused madness and mutations to spring up among the celestials around it, on a citadel of the astral deva Arelsis in the ocean of Lunia. After being contained, he may have been destroyed by being brought to Chronias, the highest heaven, or he may have been sent back to Limbo to give a lesson to the other lords that Celestia is not to be used as their dumping ground.
Although he is a Lord of Chaos, Wartle is not as powerful as Ssendam or Ygorl. Wartle appears as a short (five-and-a-half feet tall), bloated toad, colored grayish brown with sickly green spots. His skull is crested with small, backwards-pointing horns. He can also take the shape of a short, pudgy human with a whiny, raspy-sounding voice. In both forms he is covered in warts. He fights with a magical morning star that can also fight on its own.
Wartle appears, superficially, to be weak, cowardly, and incompetent, though he is actually a powerful and deadly creature. He has been described as whimsical, flippant, inconsistent, crude, and insulting. He is a notorious liar. He regularly demeans the other slaad lords, and in turn is not well-regarded on his plane, though some lesser slaadi have taken a liking to him.