There's a certain type of DM who grins when Slaadi appear. Body horror? Check - eggs gestate inside victims, bursting out when ready. Identity erosion? Absolutely - infected characters slowly stop being themselves. Shapeshifting paranoia? Every NPC could be a Gray Slaad. This entry walks through Red/Blue transformation horror, Green/Gray/Death shapeshifting tactics, control gem slavery (chaos creatures forced to obey), Limbo invasion scenarios, and critical safety tools for Session Zero. Slaadi remind players that some horrors don't kill you. They replace you, piece by piece, until nothing remains but chaos wearing your face.