Aldrich, Devourer of Gods is your next Lord of Cinder, ... Devourer of Gods is weak to both lightning and fire damage (high spec pyromancers in particular will be able to do a lot of damage). ...

The Devourer boss is weak against one of the most popular Descendants in the game, Bunny. Any lightning-based Descendant will deal extra damage to the boss, especially those that specialize in DPS.