The sladdi are a race of Outsiders that resemble giant humanoid toads of various colors from the plane of Limbo. the slaadi have been depicted as having a complex social system bound up in the relationship and reproductive cycles of the various subtypes. Some subtypes dominate others, though as slaadi are creatures of chaos, such domination occurs not through a regimented hierarchy, but by brute force.
The slaad have been dominated by the Slaad Lords, Ssendam and Ygorl. If a death slaad survives a century, it turns into the white slaad. And if the white slaad survives a century, it turns into a black slaad in the manner of its preceding transformations.