Slinkman is a banana slug, and like a real slug, Slinkman is an invertebrate organism.

He knows the Bean Scout handbook cover-to-cover (although he seems to always read it upside down). He's shown to be loyal, kind and obedient. Even though Slinkman is the one who basically runs Camp Kidney, he still has to answer to Scoutmaster Lumpus. Also, he generally assumes a submissive role, doing nearly everything for Lumpus and almost always obeying his every command.