Yulian, also called Yattaran, holds the rank of lieutenant on Captain Harlock's spaceship, the Arcadia. He possesses a large build and stands above average height. His typical attire includes blue clothing: a skull-and-crossbones bandanna, a light blue shirt with dark blue lines, jeans, and leather shoes. He wears large round glasses and has dark brown hair with a mustache. Personality-wise, Yulian demonstrates unwavering loyalty to Harlock and views the crew as his family. Generally easygoing, he expresses visible disappointment when plans fail or trust is broken, such as after the betrayal by crew member Yama. He only reconciles with Yama after confirming Earth's habitability and receiving persuasion from fellow crew member Kei Yuki. His demeanor blends a boisterous nature with protective instincts, particularly toward Kei; their relationship features belligerent tension and occasional jealousy stemming from her feelings for Harlock. In terms of abilities, Yulian exhibits expertise in navigating the Arcadia's complex layout, utilizing this knowledge for tactical operations and combat. He employs specialized powered armor for close-quarters fighting, favoring a variant equipped with a fin and an axe. He also functions as the ship's hacker, handling technical intrusions and system overrides. Narratively, he guides crew members during missions, participates in battles against forces like the Sanction Fleet, and assists in strategic actions such as deploying vibration bombs. He is incapacitated during one engagement when the Arcadia shields itself from an energy weapon blast. Across different adaptations, the character undergoes significant reinterpretation. Original manga and earlier anime portray Yattaran primarily as a comedic figure focused on assembling plastic model kits, often needing prompting to perform duties. Conversely, the 2013 film reimagines him as Yulian—a physically imposing and intellectually capable combatant embodying the "Big Fun Genius Bruiser" archetype. This version emphasizes his combat prowess and technical skills over model-building hobbies. His background of loyalty to Harlock and the Arcadia remains consistent, though his narrative role expands in the film to include direct confrontations, taking hostages during ship boardings, and surviving catastrophic events like planetary-scale weapon discharges.