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
Lambert the Sheepish Lion to "The Two Mouseketeers", a "Tom and Jerry" cartoon which shared one of 7 Oscars for the Tom and Jerry series. A picture book adaptation for children was also released in the 1970s as part of the "Disney's Wonderful World of Reading" series. The original print of the film was given as a gift to Emperor Hirohito of Japan because it was his favorite Disney cartoon. The short was included as an extra on the 25th anniversary DVD release of "The Fox and the Hound". It also aired as a prelude to Disney's "The Lion King" when originally released on