Suspiciously Specific Denial: Denies having a job offer from JCN, even when he's not being asked about anything related, and is only overhearing Sharon and Ki's conversation about what Ki will do for work.
Unwitting Pawn: In Surreptitious Machinations, Trudy manipulates him into building Project Velociraptor, a power source for energy weapons, Deflector Shields and a Kill Sat, which she intends to use for world domination.
Wide-Eyed Idealist: He gets taken down a notch by Trudy's betrayal. Ironically, his pre-Surreptitious Machinations trust in others inspires Trudy to be more trusting, as he concludes, based on past experiences, not to trust Trish.
Big "NO!": After being told he can't wear shorts to Regional Telecom.
Brilliant, but Lazy: His brother finds it frustrating that he doesn't live up to his full potential, and is outraged when Fooker manages to take his job, despite being taken by mistake and taking the test while drunk.
Escalating War: With Trent, culminating in threatening to sue each other. Fred is convinced to call his lawsuit off, but by this time, Trent has found a lawyer who is willing to believe him about Fred being a slime mold.
Kick the Son of a Bitch: Using his newfound powers to force Trent to sexually harass Sharon, go almost naked in front of a client and get himself arrested. It earns him a What the Hell, Hero? and comes back to haunt him during the lawsuit, but it's hard to sympathize with Trent.
Only Sane Man: Takes up this role in the "Alpha Female" arc when, teaming up with Ki and Sharon, he questions why a funeral home would need an online shopping cart. It turns out that the client also asked that question, and ends up cancelling the contract because they don't need one.
Shoot the Dog: He states a willingness to kill Trudy's younger self, who, while having done some terrible things, has not yet accomplished her plan, in order to stop Empress Trudy from establishing herself.
Accidental Misnaming: Mr. Oshiro keeps calling Ki "Kyoko," the Japanese name she was supposed to have.
Exiled to the Couch: After he makes the mistake of implying that he views his mixed marriage as a mistake, even after he apologizes.
Former Teen Rebel: Mr. Oshiro was apparently a cultural rebel in his youth, marrying a Chinese woman, but became more conservative with age.
Hey, You!: He typically calls Nick "gaijin"("foreigner"), but calls him "Nick-san" when apologizing to him.
Hypocrite: Mr. Oshiro disapproving of Nick's marriage to Ki on the basis of him not being Japanese, when he married a Chinese woman. Nick and Ki both call him out on that.
Japanese Honorifics: Nick calls Mr. Oshiro "Oshiro-sama", and he calls his daughter "Kyoko-san" or "Ki-chan".
Love-Obstructing Parents: Mr. Oshiro is the last obstacle Nick must overcome to get the right to marry Ki. Interestingly enough, he wasn't nearly as much of a problem when Ki was engaged to Sam, and Sam's parents were the problem.