The Dollmaker (Frank Welker) is a rip-off of the Puppet Master, who bedeviled the Fantastic Four back in the day. DC had their version, too, the Puppeteer, who was a 1-shot menace vs. the Teen Titans before being seemingly killed off in the early 80's. Anyway, Dollmaker uses some magic clay, a la Philip "Puppet Master" Masters, to control the actions of our heroes.
Here's "The Case of the Dreadful Dolls":
Should've merited the entire half-hour, in this writer's view.