|Did you know that dry ice burns?
|Real name 鈴木功一 Suzuki Kouichi
|Voice (JP): Minoru Shiraishi|
Voice (EN): Ian Sinclair
|Age: 21 years old
||Birthday: June 28, 1989 (Cancer)
||Blood Type: B
||Vital Stats: N/A
4℃（シド、Shido?）is a minor antagonist who first appeared in the Steins;Gate visual novel as the cheating opponent and sore loser to Faris in the Rai-Net Access Battlers Championship.
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.