What is "rennbuu"

Rennbuu, the flamboyant Lord of Colors, is one of the youngest slaad lords, in the Dungeons & Dragons roleplaying game. He takes great joy in his newfound powers to transform everything around him into works of art. Rennbuu can be practically cruel and malicious as he busily roams Limbo and the planes, taking a perverse delight in ruining others’ appearances. Powerful slaadi know well to avoid him, as his touch can ruin them; lesser slaadi serve him in hopes of becoming more powerful.