In a 2016 interview, Casper Van Dien revealed a funny incident when he was picking up his two daughters from school: "I went by the line at school to pick up my kids.....I drive up to the school, and when I get there there are these six ten- and eight-year-old boys hanging out with my daughters. I pull up in the line, and the boys go, 'Johnny Rico! Why didn't you tell us your dad was Johnny Rico?' And I said, 'What are you boys doing watching STARSHIP TROOPERS?' And they said, 'Our dads made us watch it with them!' Then my daughters get in the car, and my ten-year-old says, 'Dad, were you really naked in STARSHIP TROOPERS?' And I said, 'Yeah,' and she said, 'How could you do that to me?!' Then my eight-year-old says, 'Wait, like naked naked?' And I said 'Yup,' and she said, 'Oh my God, my life is ruined!' That was the longest three minute ride home I have had in my life."
Michael Ironside was Casper Van Dien's mentor on the film - as his character mentor and also in real life, behind the scenes and on set. "And I still hear his voice and everything, when I'm acting, to this day. The same goes with Clancy Brown. Both of them, they influenced me more than they know."
Director Paul Verhoeven and stars Dina Meyer and Casper Van Dien confirmed that Verhoeven and cinematographer Jost Vacano shot the co-ed shower scene in the nude themselves, on a dare from Meyer ("And it helped!" added Verhoeven). On the day of the shoot, Verhoeven had cleared the set of everyone except himself, Vacano and the cast, and asked them to do a little "fashion show without fashion" so that they could get comfortable being naked. When the cast was reluctant to disrobe, Verhoeven asked them what the big deal was, to which Meyer responded, "Paul, if it's no big deal, why don't you do it?" Quite unexpectedly, both Verhoeven and Vacano got undressed. Vacano had no problem with it, as he had been raised in nudity camps, but Verhoeven later admitted that he found it somewhat difficult; however, as he told Vacano, "Hey, we need to give an example". The effort payed off, because after an initial shock (Van Dien reportedly yelled "Oh God! Dina! Why!?"), everyone started to laugh, and the scene was filmed without problems.
Director Paul Verhoeven explained that his reasons for including the notorious co-ed shower scene were to show that for all its flaws, the Federation's army has complete gender and racial neutrality, as women and people of color are seen in high ranks with no issue. He added that the gender neutrality extends to the point where men and women shower together, pointing out that most of them are fascists without libido, too preoccupied with their military career to regard their nudity as even vaguely erotic. When talking about the legacy of the scene in a 2014 interview with Empire Magazine, he mentioned the difficulty of including it: "It is strange, but of course Americans get more upset about nudity than ultra-violence. I am constantly amazed about that. I mean, I haven't seen any sex scenes in American film that are anything other than completely boring. A bare breast is more difficult to get through the censors than a body riddled with bullets."
Most of the arachnids appearing on film are CGI but a few life-sized, robotic models were built. However, during the battle scenes, the actors mostly wound up looking at director Paul Verhoeven himself who would stand in front of them and jump and scream, even chasing them with a broom in an attempt to generate some of the fearsomeness of a 12-foot space ant. Clancy Brown, who played Sgt. Zim, affectionately described the director as "a nutbag", given to "jumping up and down with a bullhorn going, 'I'm a big fucking bug! I'll kill you!' I loved him; he was so much fun."
Jon Davison: the producer, during a media break commercial owner of the dead dog says "the only good bug is a dead bug".
Zoë Poledouris: Film composer Basil Poledouris' daughter sings in the prom dance scene. She's on stage wearing a sparkling blue dress, and sings "Into It" and a cover of David Bowie's "I have not been to Oxford Town" from the 1997 album "Outside" minor lyrical changes have been made, with the song changed to "I have not been to Paradise".
Edward Neumeier: One of the propaganda clips is of a murderer (screenwriter Neumeier) being captured that morning, and was said to be executed at 6 PM. Even if the murderer was captured at 12 AM exactly, that means he was captured, tried, convicted, sentenced and executed in no more than 18 hours.
Dale Dye: as high-ranking officer present at the capture of the brain bug at the end, says to Carl, "What's it thinking colonel?"
Paul Verhoeven: [quick zoom-in] In a scene where a soldier gets killed in front of Johnny Rico, there's a quick zoom-in shot to Rico's face reacting erratically. In one of Verhoeven's previous films, RoboCop (1987), toward the end of the film, there's a quick zoom-in shot of ED-209 outside of the OCP building.