Role in the series
During his first appearances, N. Gin is portrayed in a similar light to that of Cortex's previous henchman Nitrus Brio: he is less impulsive than Cortex or Uka Uka and prefers to think over the situation rather than rushing to a solution, which usually leads to a loud rebuttal by his superiors whenever he questions their way of doing things, as shown in the opening cinematics of Crash Bandicoot 2: Cortex Strikes Back and Crash Bandicoot: The Wrath of Cortex, the latter in which N. Gin actually contemplates the fact that Crash Bandicoot might simply be too powerful for him and the others to defeat.
N. Gin's behavior becomes more deranged by Crash Nitro Kart and Crash Twinsanity, becoming prone to fits of giggling.
In Crash Tag Team Racing , N. Gin is depicted with D.I.D (dissociative identity disorder), sadomasochism and as an extremely effeminate madman, prone to fits of yelling, sobbing, giggling as shown when he is ordered to destroy Crash and his friends and acting with feminine mannerisms and making doomsday weapons out of odd items such as fuzzy slippers. He is shown to have low self-esteem and cross-dressing tendencies, at one point asking Crash to buy him a ballerina outfit so that he can feel more attractive. It's also shown that N. Gin appears to suffer from severe depression (This is evidenced when Crash attacks him, as he will sometimes randomly blurt out that his is happy that Crash is trying to kill him and asks how he can thank him. More evidence to support this is when N. Gin is racing and another racer brushes up against him and he expresses that he likes that they are trying to kill him). Possible reasons for this are because he hates himself (His failed attempts to destroy Crash in the past could be a source), the fact that Cortex constantly ridicules him (He once described N. Gin as having bad complexion, which he seems to take seriously, as he asks Crash for his opinion on the matter). Whether this is a part of his D.I.D characteristic or a stand-alone condition is unknown, as this trait is only seen in Crash Tag Team Racing. It may also be a result of his low self-esteem.
N. Gin briefly shows a misogynistic side when he informs Crash of his sister's whereabouts in Crash of the Titans, expressing disgust at the thought of girls and eventually is disgusted of Coco. This contradicts with a statement he makes over his factory's intercom, in which he expresses a desire for women. On a miscellaneous note, N. Gin enjoys muffins and cupcakes, but hates preppies, citing their music and wavy hair as reasons against them. While N. Gin is a masochist, he only enjoys pain if it is bound to logic, demonstrated by his reaction to Cortex spitting scalding hot tea all over his face despite having dumped his entire tea cup prior to that. He also has a large affiliation with the word "doom".
Also, in Crash of the Titans, he appears to be a bit of a suck-up. This is shown in the cutscene when Cortex is replaced and out of surprise, Cortex spits his drink on N. Gin. Even though he screams out of pain, he says "Thank you master!" and "Agh! Thank you again, hotter then the first!" when Cortex dumps his whole drink on his face, but it is apparent he does have a limit for how much he can tolerate, because when Cortex spits on him again he just says, "Aww, come on, he didn't even have a cup."