Itaru Hashida, widely recognized by his nickname Daru, is an accomplished hacker and devoted otaku. He operates online as DaSH—an abbreviation for "Daru the Super Hacker"—and occasionally adopts the pseudonym Barrel Titor, formed through rapid repetitions of his surname combined with the Japanese word for barrel ("taru"). Daru presents as short and overweight, wears glasses, and typically sports a dark green or olive t-shirt, blue jeans, and a signature yellow cap. A core member of the Future Gadget Laboratory, Daru wields extraordinary programming and hacking skills, enabling him to infiltrate high-security systems like SERN's mainframes and execute complex computational tasks. His personality merges technical genius with fervent otaku interests, particularly "moe culture," and he frequently makes perverted remarks while self-identifying as a "perverted gentleman." Despite this outward demeanor, Daru displays self-awareness about others' perceptions, notably experiencing intense insecurity around Yuki Amane, whom he eventually marries. In the Beta Attractor Field during *Steins;Gate 0*, Daru aids neuroscientist Maho Hiyajo in constructing a new Time Leap Machine and routinely hacks to secure data on the artificial intelligence Amadeus. He recommends Moeka Kiryu to locate Kagari Shiina and is later exposed as the anonymous hacker Maho hired to access Kurisu Makise's laptop. This triggers an ambush where Daru guides Maho and Rintaro Okabe through a secret exit, though the laptop is destroyed during their escape. Daru's familial ties prove pivotal across timelines. He marries Yuki Amane and fathers Suzuha Amane, a time traveler from dystopian futures. In the Alpha Attractor Field, he learns Suzuha is his future daughter just before her departure, reacting with both perverted jokes and emotional awkwardness. In the Beta timeline, he rebuilds a time machine amid wartime chaos while Suzuha and Yuki face lethal threats from enemy factions. His interactions with Suzuha often involve friction due to his immature conduct versus her mission-driven intensity, though mutual care underpins their relationship. Beyond *Steins;Gate 0*, Daru appears in wider Science Adventure series entries. He participates in Operation Lævateinn during *Robotics;Notes* under Okabe's direction and engages in online debates. He is indirectly cited in *Chaos;Child* for offering refuge and features in *Anonymous;Code*, where his DaSH alias ranks prominently on hacker leaderboards and he livestreams reactions to global conspiracies.