Loki is Ais' goddess. The two appear to get along, despite Loki's constant (failed) attempts to grope her and do generally anything perverted. Though Ais does threaten Loki whenever she tries to do such things, it has been shown that Loki does indeed care about Ais and vice versa.
Despite Loki being her Goddess, Riveria treats Loki in a nonchalant manner outside of serious events due to Loki's rather childish demeanor, which is evident by her frequent teasing of Riveria, affectionately calling her "Mommy". Riveria finds this behavior to be annoying, but still retains high respect for Loki as her superior.