The bulk update request #10756 is pending approval.

create alias night_light (32) -> night_light_(disambiguation) (0)
create alias nightlight (36) -> night_light_(disambiguation) (0)
change category night_light_(disambiguation) (0) -> invalid
create alias night_light_(object) (0) -> nightlight_(object) (0)
remove implication night_light_(species) (87) -> fury_(httyd) (3819)
mass update night_light_(species) -> night_light_(httyd)
create alias nightlight_(httyd) (0) -> night_light_(httyd) (0)
create implication night_light_(httyd) (0) -> fury_(httyd) (3819)
create implication night_light_(httyd) (0) -> hybrid (173786)

Reason: 'Night light' has three common meanings here

The actual thing, for which I propose the tag: nightlight_(object) (Wikipedia uses the form without the space: https://en.wikipedia.org/wiki/Nightlight)

An MLP character: night_light_(mlp)

And a hybrid species from How to Train Your Dragon: currently night_light_(species)