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
The Hanna-Barbera New Cartoon Series through Taft-HB Program Sales, and later through Worldvision Enterprises. Over time, the studio regained control of many of its earlier productions and distributed them through Worldvision. The elements of "The New Hanna-Barbera Cartoon Series" were split up, with "Wally Gator" airing as a segment on "Magilla Gorilla and Friends" on USA Network's "Cartoon Express" from 1987 through 1991. Meanwhile, "Touche Turtle" and "Lippy the Lion" were part of another package of cartoons aired on The Family Channel. Following the purchase of the Hanna-Barbera library by Turner Entertainment, these shorts eventually appeared on Cartoon Network and later Boomerang. The cartoons were