TMDb/Monarch: Legacy of Monste Celebrity Monarch: Legacy of Monsters is a hit sci-fi drama. Watch the MonsterVerse series starring Kurt & Wyatt Russell, now trending on Prime Video. April 19, 2026 AceShowbiz - Monarch: Legacy of Monsters continues to solidify its position as a major sci-fi hit, expanding its audience beyond Apple TV. The series, which returned for a highly anticipated second season in February 2026, has now surged in popularity on Prime Video as well, ranking as the third most-watched show on the platform domestically.