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 Planet on March 30, 2012 and ended on February 8, 2014, featuring a much different format unlike the original series. For example, Space Ghost did not appear in the revival thus leaving Brak and Zorak the only characters hosting (Despite this, Brak made a mini clone of Space Ghost in one episode). Another example is that instead of classic 1960s-era cartoons being showcased, the revival featured Cartoon Network's original programming, mostly Cartoon Cartoons, from the mid-1990s to late 2000s. Also, Zorak is also not trapped behind a console and is instead usually playing video games. Sometimes Zorak will get interrupted by