One of the porn videos features a smiling man on all fours, who in the comics is known as Jack from Jupiter. Jack in the comics is into the same kinds of sex acts.
The Lego animations Ryan shows to Homelander and Stormfront were animated by Canadian brickfilmer Akash Jones of Akash Lego Productions.
John Noble and Karl Urban both starred in the second and third The Lord of the Rings films. In those movies, Noble's character, Denethor, was also a cruel father who compared his surviving son to his dead one.
When Vogelbaum's daughter serves Butcher tea, she pours in the milk before adding the tea. Normally, the tea is added first and then the milk, but because she is serving tea in fine china, the milk is added first. This supposedly protects the china from cracking at the sudden temperature change.
A "fluffer" is a crew member in pornography whose job it is to fellate male talent before shoots to give them timely erections.