Destiny 2's First Raid Will Be Called 'Leviathan'

Destiny 2's PSN trophy list has leaked online, providing a few hints about the first raid featured in Bungie's upcoming sequel.
According to the trophy list, courtesy of Exophase, Destiny 2 includes a gold trophy called "Belly of the Beast," which can be acquired by completing the "Leviathan" raid.
As noted by PCGamesN, there's a Grimoire card that mentions the Leviathan, suggesting it's an ally of the Traveler. Considering Destiny 2 will focus on the Light rather than the Darkness, there's reas