Sigma

Sigma is generally a kind and honest young man, but his tendency to be easily swayed by his emotions makes him a poor choice for a game about trust and betrayal. Sigma is generally kind, honest and sincere, and he feels guilt when he chooses betray. Both Phi and Luna call Sigma a "good person". Sigma is rather positive in most cases, almost trusting everyone by default. In Alice END, when Alice cries during her emotional breakdown, he brushes his thumb across her cheek, taking her tears with it, showing he can be compassionate. He sacrifices his own life by saving Phi's in K END. At one point in the game, he feels ashamed of himself and wondering what the hell is wrong with him for considering betraying a helpless child. He also shows deep feelings for Diana. He's easily swayed by his emotions, which makes him a poor choice for a game about trust and betrayal. He does, however, easily change opinion because of the ideas and comments of the people around him, and those comments can cause him to make different decisions than he might have normally made. Because of this, Sigma can seem weak-willed and a fool who is easily taken advantage of. This is also because of player input. Sigma can be rude, immature and inappropriate at times. At one point in the laboratory, he may ask Clover if she was "dropped as a kid" for offering to kiss a frog, which could be seen as insensitive. He is also prone to occasionally slipping sexual innuendos in the direction of female players, or making outright suggestive comments. For example, he asks them to dress in swimsuits during Phi END, resulting in predominantly negative responses. Sigma may be slightly cacophobic, or at least can be inappropriate with his like of beauty in women, as he has has indicated that he picked particular choices based on the physical looks of those he'll be teamed with, although he claimed to be joking about it. Despite being immature at times, Sigma has proven that he is capable of being mature where it counts, such as when he attempts to calm down everyone during disputes, when he comforts Luna and Alice in their respective endings, when he ultimately chooses not to betray a sick Quark in one of the routes (and is disgusted with himself, questioning how that was ever an option in the first place), when he apologizes to Diana and admits his faults to her in D-END: 2, etc. Zero Sr. is also on a very different of maturity when it comes to Sigma in VLR. Sigma has a few unusual quirks. He has stellar memory, able to remember any code or password once seen. Sigma has a tic from a young age that causes him to speak with cat puns whenever he is talking about cats. In the Japanese version, he tends to end his sentences with "~nya", which is the Japanese onomatopoeia equivalent of "meow". In Zero Time Dilemma, Sigma displays a higher level of maturity due to the fact that his older 67-year-old consciousness inhabits his 22-year-old body. Sigma is much more rational and logical, thinking things from a broader perspective. He also may come off as cold at times, even when trying to comfort his teammates, and is unwilling to open up to others; he states at one point he is afraid of losing something important by becoming vulnerable. Ultimately, Sigma is supportive and cares a great deal for Phi and is willing to sacrifice himself to save her. He also develops a close bond with Diana.