4℃

4℃ (シド) is a minor antagonist who first appeared in the Steins;Gate visual novel as the opponent and to Faris in the Rai-Net Access Battlers Championship. His real name is Kouichi Suzuki (鈴木功一).

Appearance
4℃ is incredibly skinny, to the point of almost being anorexic. His skin is very dark from excessive tanning, typical for rebellious young people like him who are part of Japan’s Gyaruo/Gyaru subculture. His hair is bleached white, and he wears a hat to cover a bald spot.

Personality
Similarly to Okabe, his persona makes him appear delusional, but the difference is that 4℃ truly believes what he says, not putting up an act. 4℃ acts like a Chuunibyou believing himself to be powerful and cunning. He is angered easily, for example when he reacts aggressively to Okabe bumping into him in the Steins;Gate: My Darling's Embrace game. He tends to act smug around others as well as treat them as inferior to himself unless it benefits him. Furthermore, 4℃ is extremely selfish and always seems to react in an unfeeling and uncaring way towards others.

4℃ believes himself to have ESPer powers from the goddess Gaia, and is extremely fond of the word “kuro”, meaning “black”. He likes to monologue about his elegant evil black ways he has from Gaia and other nonsense. He also has the catchphrase “Did you know that dry ice burns?” which is incorrect because dry ice is actually very cold, not hot, and he is annoyed whenever Okabe corrects him on this. He also has an embarrassing bald spot on top of his head that is covered by a hat, which Okabe notices the first time they meet when Okabe angers 4℃ and 4℃ attacks him and then 4℃’s hat falls off, revealing his bald spot.

He is the leader of a violent street gang known as the Viral Attackers, and wins Rai-Net Access Battlers tournaments by beating up or intimidating other Rai-Net teams into not showing up. He also hates Faris NyanNyan with a passion, as well as hating catgirls and maid cafes. He refers to himself as part of the “New Generation”, making an approving reference to the New Generation Madness serial killings that occurred in Shibuya a year earlier, in 2009 during the events of Chaos;Head, and trying to falsely claim credit for at least some of the serial killings (which he actually had nothing to do with).

Competition Gone Awry
In Chapter 7 of Steins;Gate, which takes place on the world line with divergence 0.409431% of the Alpha Attractor Field, 4℃ is a minor antagonist who defeats Faris NyanNyan at the Rai-Net Access Battlers championship by cheating (specifically having his fellow Viral Attackers shine lasers in her eyes and doing things to distract her so she can’t think). Faris is depressed after this and convinces Okabe to use the Time Leap Machine to go back and give her sunglasses and earplugs prior to the Rai-Net championship for protection, claiming that if he does this, she will remember what D-Mail she sent.

Okabe time leaps back to before the Rai-Net championship happened, and manages to get Faris to accept the sunglasses and earplugs, although she is very difficult. Faris only uses the earplugs but not the sunglasses, though, so Okabe has to find the Viral Attacker in the audience at the tournament who is shining a laser in Faris’s eyes and put a stop to it. Faris wins the tournament, and talks to Okabe about she was probably lying about being on the verge of remembering what D-Mail she would send, as well as explaining her “Cheshire Break” ESPer ability to tell whether other people are lying, tell how they are feeling, and predict their behavior.

4℃ overhears this and has his gang, the Viral Attackers, chase Faris and Okabe, who end up hiding out in the same building where Faris’s maid cafe May Queen Nyan-nyan exists in other world lines. While hiding out there, Faris remembers everything, not just about May Queen Nyan-nyan, but everything else that happened in other world lines, including what D-Mail she sent. After some Viral Attackers make their way inside and attack, Faris and Okabe manage to escape outside, only to be surrounded by Viral Attackers and have 4℃ show up again, and 4℃ beats Okabe bloody. Faris’s dad Yukitaka Akiha shows up in a limousine, almost plowing straight into the crowd of Viral Attackers, sending the Viral Attackers scattering in fear, but avoids actually hitting anyone with the car, and he rescues Okabe and Faris.

After this, Yukitaka Akiha drives Okabe and Faris back to the apartment Faris and her dad share, where Okabe spends the night, and Faris tells Okabe how her D-Mail saved her dad’s life and how if she undoes it, her dad will be dead. But Faris also gives Okabe permission to undo the D-Mail and promises to help him, since it is necessary to save Faris’s friend Mayuri Shiina’s life. The next day, Okabe gets to decide whether or not to send the D-Mail to undo Faris’s D-Mail. If he does not send it, he gets Faris’s ending, but if Okabe does send it, the Steins;Gate game moves onto Chapter 8, the chapter about Luka Urushibara, and while it stays in the Alpha Attractor Field, the world line divergence increases to 0.456914%.

Appearances in Other Media
In Steins;Gate: My Darling's Embrace, 4℃ is briefly encountered in the prologue warning Okabe to not enter Faris’s cafe claiming it sucks and is a waste of time and money. Later in the game in the Faris route, the timeline greatly differs as 4℃ is infamous among the maid cafe world for using skeevy strategies and scare tactics to monopolize maid cafes around Akihabara.

He is a minor antagonist in most Steins;Gate games, including the retro adventure game 8-bit ADV Steins;Gate.

Trivia

 * Though 4℃ prides himself on being called 4℃, pronounced “Shido”, Okabe prefers to belittle him by calling him "Yondo". "Yon" being an alternate reading for the number 4 in Japanese.