Yullian, known as Yattaran in Japanese media, serves as a lieutenant aboard the Arcadia, potentially second-in-command though his rank relative to crewmate Kei is ambiguous. This physically imposing, boisterous officer provides comic relief through his personality and banter with longtime comrades. He operates advanced hardsuits in combat, wielding a large axe as "The Big Guy" during boarding actions and close-quarters engagements, yet also functions as "The Smart Guy" with hacking expertise to breach enemy systems. He shares a sailing history with Captain Harlock and Kei, fostering "Belligerent Sexual Tension" with the latter—marked by leadership disputes, protectiveness, and low-key jealousy over Kei's feelings for Harlock. His loyalty to Harlock and the Arcadia’s mission remains unwavering. This incarnation reimagines him as an "Adaptational Badass," contrasting traditional portrayals where he appeared short and eccentric, obsessively building model ships while neglecting hygiene or awareness. Here, he retains core ship expertise; Harlock acknowledges his structural knowledge of the Arcadia for maintenance and renovations. The accident involving Yama/Logan, Ezra, and Nami forms part of the crew’s shared history, though Yullian’s specific link remains unexplored. During operations, he boards enemy vessels via hardsuits and ropes, later expressing irritation when Gaia Coalition forces copy their tactics. He delivers deadpan lines in crises, notably quipping "Well this sucks" as a superweapon targets the Arcadia. His fate after the ship crashes on Earth and Yama/Logan assumes captaincy goes undepicted. Beyond the 2013 film, the character originates in Leiji Matsumoto’s 1977 manga and 1978 anime as Harlock’s first mate and comic relief, fixated on model ships. His technical knowledge of ship design endures, with Harlock noting it ranks second only to the Arcadia’s creator, Tochiro Ōyama. His classic design features Matsumoto’s signature ovaloid face, glasses, potbelly, and casual bandanna attire. Frequently absorbed in model-building while ignoring basic needs, he nonetheless displays courage in emergencies. This original portrayal persists in sequels like *Endless Orbit SSX* (1982) and *The Endless Odyssey* (2002), maintaining his loyalty, model obsession, and maintenance duties. The 2013 film’s Yullian significantly departs from this established depiction.