Alex Toth, a maverick comic artist who designed classic Hanna Barbera adventure cartoons such as "The Superfriends" and "Space Ghost," has died. Toth died while sitting at his drawing table at his home in Burbank on May 27, his son Eric said. He was 77. Eric Toth said the cause of death had not yet been determined, but his father had been in failing health for years. Before working in animation, Toth was a comic book artist, widely regarded as brilliant, who had some success but even more frustration. He rarely held on to an artist job for long because...