In the final Phule's Company book, many of the characters and themes developed all come together. Phule's butler's girlfriend ends up getting stationed with the company and they run off on a short vacation. This causes all sorts of consternation, not the least of which is a "shut down" switch in Phule if there are issues with the computer. They try to trace the butler and go off on a mission to find him. However, right after they leave, the general announces a visit. They get the robot Phule to involve him with golf. However, he gets hit in the head and becomes a strict drill sergeant. The real Phule eventually spoils a rival's casino operation and is rescued through the help of some family members on "old earth" Italy. There are plenty of other humorous bits on the way. Eventually, everything ends up back to normal.
In the latest episode of the Phule "sitcom", papa Phule visits Junior's casino. Alas, he is off serving a mission on another planet. This doesn't stop dad from trying to prove that casinos are a bad investment by playing the slots. They decide to hook up a "major jackpot" to entice him. Alas, things manage to go wrong. Back on the Zenobian planet, Phule's company is visited by trophy hunters and an environmental group. The group includes a genetically modified dog that can talk in a beyond-human register. (A new rabbit-like recruit has no problem talking to him.) Eventually, everything falls apart, then comes to a satisfying conclusion.
The fourth Phule's Company books continues with many of the same sitcom-esque humorous episodes. The General keeps trying to get Phule's Company to fail. The company has been asked to be military advisors to the Zenobians. This time he sends a major out to whip them into shape. However, he ends up going crazy and leaving. There is a robot Phule who is kidnapped from a casino, but ends up on the base. There are a group of people who join an "Elvis church" and alter their appearance to look like Elvis. Even robot-proof camouflage plays a role. In the end Phule makes peace between the Zenobians and a mysterious other species and the general falls flat on his face, all while many funny things happen in the interim.
In A Phule and His Money, Phule's company continues to work on the casino. They face many forces trying to break them down. They also get new recruits. Then they are given a new assignment to help help keep peace is in a civil conflict. This just happened to be the place where Phule caused problems early in his career. The planet was a former mining colony that now is known for roller costers. With Phule's help, they develop two great roller coaster parks and resolve the conflict. It is interesting how the "space future" was viewed in 1999. Simple things that we take for granted (like cell phones) would have made significant changes in how events would have unfolded.