Thundercats The Book of Omens (Season 4, Episode 20)
TV-Y7
TV Episode | 23 min | Animation, Action, Adventure

Thundercats

The Book of Omens (Season 4, Episode 20)

TV-Y7

TV Episode | 23 min | Animation, Action, Adventure

The key to the Book of Omens is finally solved and it is unlocked. All of the team must pass different tests to save the planet, and Lion-O faces many trials within the book to prove himself once and for all as Lord of the Thundercats.

Head writer

Leonard Starr

Writers

Ted Wolf (based on characters created by) | Leonard Starr | William Overgard (written by)

See all filmmakers & crew (16)

Edit Released

Updated Sep 29, 1989

Release date

Sep 29, 1989 (United States)

Contacts

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Cast	+ Add Cast
8 cast members

Name	Known for
Larry Kenney Lion-O (voice) Lion-O (voice) See fewer	Thundercats (2011)
Earl Hammond Mumm-Ra / Guardian of the Book of Omens (voice) Mumm-Ra / Guardian of the Book of Omens (voice) See fewer	Thundercats (1985)
Earle Hyman Panthro / Ancient Spirits of Evil (voice) Panthro / Ancient Spirits of Evil (voice) See fewer	The Cosby Show (1984)
Lynne Lipton Cheetara / Wilykit (voice) Cheetara / Wilykit (voice) See fewer	Thundercats Ho! The Movie (1987)
Bob McFadden Lynx-O / Snarf / Snarfer (voice) (as Robert McFadden) Lynx-O / Snarf / Snarfer (voice) (as Robert McFadden) See fewer	Thundercats Ho! The Movie (1987)
Peter Newman Wilykat / Bengali (voice) Wilykat / Bengali (voice) See fewer	Thundercats Ho! The Movie (1987)
Doug Preis Alluro Alluro See fewer	Doug's 1st Movie (1999)
Gerrianne Raphael Pumyra Pumyra See fewer	Thundercats Ho! The Movie (1987)