Most days, Bill Ung is a typical software engineer at the International Business Machines Corp.

Up until last weekend, however, he filled his Saturday nights scantily clad and dancing the Time Warp while performing as Brad Majors in “The Rocky Horror Picture Show.”

The show is performed in front of a movie screen showing the original 1975 film. As the actors portray the scenes, audience members will give the show an extra 4D feel by making fun of the actors, putting newspapers over their head while it’s raining in the film and dressing in costumes on theme nights.

As Brad, Ung has performed with Long Beach Rocky Horror at venues like the South Coast Village Regency Theatres in Costa Mesa, the Warner Grand Theatre in San Pedro and the Art Theatre in Long Beach.

Ung said he first fell in love with “Rocky Horror” about 25 years ago, when he was invited to see a performance with some Kmart co-workers. From there, it became an obsession, he said, and he joined Long Beach Rocky Horror not too long after.

Ung said he grew to love his “Rocky family” and became recognized for performances at various conventions and movie-studio anniversary shows, including one at the Hollywood Bowl. But now, he said, he and his wife are expecting their first child, and Ung said it’s time to retire from the show.

His final performance with Long Beach Rocky Horror was Saturday night, and Ung said he’ll miss the show but is excited for his new adventure.

Ung spoke with the Long Beach Register over the weekend to discuss his passion for the show and some of his achievements while in the cast.

Q. What first attracted you to “Rocky Horror Picture Show”?

A. I loved the energy, the enthusiasm and the underground feel. It felt like almost anything could happen next.

Q. What is your favorite part of performing in “Rocky Horror Picture Show”?

A. That’s tough. I enjoy visiting folks in line, meeting new people and welcoming them to the show. At the same time, I really enjoy working with the cast and collaborating with their creativity and individual talents.

Q. What do you do for your day job, and what is it like balancing that with the show?

A. I work as a software engineer Monday through Friday from about 9 a.m. to 5 p.m. Balancing that with ‘Rocky’ is only an issue when adjusting my sleep schedule from being a night owl then back to normal business hours.

Q. Your rendition of character Brad Majors is widely recognized, from performances at conventions to special anniversary shows. How does it feel to be recognized for your portrayal of the role?

A. It’s nice to be recognized for something that you love doing, and it’s always a little amusing when I get stopped at places like Disneyland or Knott’s Scary Farm or even just going out to dinner. It’s enough to feel appreciated, but not so much that it interferes with everyday life.

Q. What are some of your favorite memories performing in the show?

A. At a 2005 convention, we did a “Wizard of Oz” version of “Rocky” where the first few scenes were in black and white, so the performers on stage did custom costumes and makeup to match the movie. We also did a performance called “Shock Warp,” where we merged the “Rocky” song “Time Warp” with the “Rocky” sequel “Shock Treatment,” all in one song.

At our 2007 convention, we did a cabaret-style performance called “Bring on the Men,” which comes from a musical called “Jekyll and Hyde” but redone using “Rocky” characters. Overall, I think it’s mostly that I really enjoyed working with a great group of people,and making lifelong friendships. I’m going to miss it, but I’m excited to start my new family life.

Contact the writer: bwoolsey@lbregister.com or 562-277-8343