- That also explains why he was so short - he aged faster, so he didn't have time to grow.
Well, his life used to be much easier than it is when he first appears on the show. He complains about his obsolescence, having once had the honor of working as a diplomat with high-ranking politicians—and attending fancy dress parties, according to his diary in "Feud for Thought"—but later forced to work as a housekeeper/janitor. Also, the self-descriptive "Recruitment Ad" (in episode eight of season one) markets the Time Squad as an action-packed testosterone-fest and seems to imply that robots are rewards for the recruits rather than people in their own right. Larry obviously wouldn't be enticed to join such an organization...unless he was desperate to find work after all of Earth's countries combined into one "Super Nation." Even if he signed on board as a cook or a medic (which is most likely), he would have found little in common with the soldiers that populated the organization. Queen Jezebel III and friends were apparently comfortable with his cross-dressing, but the future's only remaining branch of the military would not permit such a habit; there was no real place for an effeminate male in Time Squad. Larry had probably lost his original cheerfulness by the time he was assigned to work with Tuddrussel, but their clashing personalities only aggravated the problem.
Developing a deep sense of sarcasm was Larry's way of toughening up as a result of losing his prominence as a diplomat, having to work in an organization without similarly effeminate peers, and dealing with a frustrated crush on an overly aggressive and childish teammate. That last point is particularly important because it explains his behavior in "Ex Marks the Spot." By then, Larry had decided to abandon (temporarily, it turned out) his sarcasm and follow the dictates of his original programming—a chipper, devoted housekeeper, which in turn was a refinement of his early domestic-servant programming as seen in "Larry Upgrade"—because he expected that Tuddrussel would like him more that way and acting on his affectionate feelings was less frustrating than suppressing them.
- Postscript: What was actually happening in "Ex Marks the Spot" was somewhat different from the hypothesis posted above. It wasn't extremely different, but Larry's motivation wasn't precisely to be open about his feelings....
- Stan and Tuddrussell are lantern-jawed officials who's a gun nut, impulsive, and not very bright
- Larry and Roger are gray, sarcastic, hedonistic, Camp Gay (with Roger, it zigzags — some episodes will have him attracted to men while others will have him attracted to women; with Larry, there is no zigzagging), effeminate, are nonhuman science fiction characters (Larry is a robot and Roger is an extraterrestrial), have dressed in drag on numerous occasions, and may or may not have a crush on the aforementioned lantern-jawed official,
- Otto and Steve are auburn-haired nerds with irritating voices.
All that's missing is the Blonde Republican Sex Kitten wife who used to be a teen rebel, the dark-haired political activist/hippie daughter, and the lecherous, evil goldfish who used to be an East German skiier (though the BRSK housewife and the political activist/hippie daughter can also apply to Larry as both "Larry Upgrade" and "Child's Play" show Larry as a housewife-type and an activist-type). On top of that, Time Squad got canceled in 2003 and American Dad premiered on FOX in 2005. It's too much of a coincidence to be a coincidence.
- Alternatively, that happens already, and they simply don't take him on those missions; he spends that time in the auto-learning educational holodeck covering topics other than history (and having misc. nonwork time so he doesn't exceed the maximum amount of work time per week rules for minors).
- They could just give such missions to a different Squad.
- There's always the possibility that he spends time between missions reading up on history that took place after they found him