River Magnus

Basic Info
River Magnus is the mystical narrator of the cinematic universe.

River Magnus vs. Apaullo Theory
It is speculated that the two deities, River Magnus and Apaullo, are locked in an eternal battle of ideologies. River Magnus represents whimsical freedom and Apaullo represents grim pragmatism. River Magnus may be recruiting fellow spirits to build his army for the final war with Apaullo that may come in the final film of the River Magnus saga.

River Magnus has shape-shifting capabilities
The River Magnus we see in the film looks much different to that depicted in the official cartoon rendition of the character. This could hint to possible shape-shifting abilities that River Magnus may possess.