In the new NatGeo docuseries Underdogs, narrated by Ryan Reynolds, the focus shifts from majestic animals to nature’s quirky outcasts, showcasing their unconventional traits with humor. The five-part series features unique themes like "Superheroes," "Sexy Beasts," and "Terrible Parents," and includes never-before-seen footage, such as glowing grubs in a New Zealand cave, with a PG-13 rating for its irreverent content.