ThunderCats (comics) entered the Book of Omens to begin his training and claim his rightful place as Lord of the ThunderCats, but Mumm-Ra uses a powerful spell to keep Lion-O trapped in the book for several years in real time, not "Book" time, and seizes control of Thundera afterwards. In the follow-up mini-series, "The Return" (written by Gilmore and illustrated by Benes, Pimental and Lea), published in 2003, Lion-O returned to Thundera to find it enslaved to Mumm-Ra. Several of the ThunderCats are scattered. Panthro, who was left in charge while Lion-O was away, was forced into slave labor. Tygra and Cheetara
Cartoon Cartoons Cartoon Cartoons Cartoon Cartoons is a collective name used by Cartoon Network for their original series from 1996 to 2003. The majority of them were produced by Hanna-Barbera and/or Cartoon Network Studios. The concept of Cartoon Cartoons was spearheaded by Fred Seibert, and originated from his animation anthology series, "What a Cartoon!" (later re-titled to "The Cartoon Cartoon Show"). Once their popularity had grown, the Cartoon Cartoons were featured on the network's Friday night programming block, Cartoon Cartoon Fridays. The name was retired by the network in 2003. Since their heyday, re-runs of the Cartoon Cartoons have continued to air