The details in the themed booths contain a lot of Easter eggs. There are the obvious ones, like the Stargate and the Tardis in the sci-fi booths, and the less obvious ones like the ‘Me Android’ sign (instead of ‘I Robot’). We have seen a lot of Walking Dead references in the horror booths (including the ‘Dead Inside’ doors and the prison towers) and Game of Thrones references in the fantasy booths (including an Iron Throne).
I also presume the ‘Captain Hammertoe’ posters with Jack moore on them are a reference to Nathan’s role as Captain Hammer.
The main security guard is Kevin Smith, who is a staple at cons.