It's interesting that they choose a lot of PS1, PS2 and PS3 characters to be mid-bosses in PSIV, giving a nice connection with all previews games.
Edit
By the way: PSI City Guards looked like Starwars (SW) Stormtroopers, but this one looks like the "Emperor's Royal Guards" from SW5 or, at least, like the "Empire's Red Guards" from SW4.