Itaru Hashida

Itaru Hashida (橋田 至, Hashida Itaru), also known as Daru, or by his nicknames DaSH (Daru the Super Hacker) and Barrel Titor, is an experienced hacker and a hardcore otaku, a member of the Future Gadget Lab and a close friend of Rintaro Okabe. He also eventually becomes the husband of Yuki Amane and the father of Suzuha Amane.

Itaru is one of the main characters of Steins;Gate, Steins;Gate 0 and Robotics;Notes DaSH, and is also mentioned in Robotics;Notes and Chaos;Child.

Appearance
Daru is short and overweight, something few characters have taken notice of during the course of the story and later becoming a significant plot point.

Daru always wears a dark green/olive t-shirt and a pair of blue jeans along with his signature yellow cap. In one of the anime episodes, Daru is seen wearing a yellow Hawaiian shirt.

Personality
Itaru is obsessed and extremely talented with programs and computers, capable of hacking into the mainframes of top-secret organizations and processing complex computer codes.

Like Rintaro, he enjoys making Future Gadgets, but is not nearly as enthusiastic. Daru also has a very particular naming sense for his creations, usually adding serial and version number even if unnecessary.

One of Itaru's most prominent characteristics is his obsession over moe culture, as well as his perverted tendencies, often to the annoyance of those around him. He is also a big fan of Faris.

Plot
While Rintaro and Itaru had known one another since high shool, their friendship only really began from the moment they entered university. Itaru joined the Future Gadget Lab some time after Mayuri Shiina, his reasoning for doing so being that May Queen Nyan-nyan was fairly close to the lab.

While Rintaro and Mayuri were off to attend Dr. Nakabachi's seminar on time travel, Itaru stayed on the lab trying to find out what was the problem with the PhoneWave, the lab's latest Future Gadget. As he experimented with it, a message from Rintaro, informing him of the murder of Kurisu Makise arrived, and was sent to the past through the PhoneWave, shifting the worldline towards the Alpha Attractor Field.

Trivia

 * Itaru is the only character in the Science Adventure Series to have directly impacted the plot of every entry in the series since his introduction.