Salt is a cheerful robot with a yellow and black mechanical body featuring a human-like face. He wears an apron and sports a bandaged head for a distinctive look. His personality shines through a fondness for wordplay, frequently using puns and rhymes. Functioning as the cook aboard the Number One Starship, Salt exclusively prepares pizza, creatively adapting other dishes into pizza forms. This culinary passion reignited upon meeting Rei in a scrap heap after prior rejections. Before joining Rei's crew, Salt served as the cook on the COWCOW ship but left to improve his skills, later becoming unable to locate it. He eventually reunited with the COWCOW crew, discovering they had been cursed into transparency by Ultimate-Beelzebeat for rejecting them as masters. The curse broke when Rei obtained Ultimate-Beelzebeat, resolving Salt's distress.

Beyond cooking, Salt engages in Battle Spirits card battles using a blue deck featuring key cards like Tsundog-Golem, Kojirond-Golem, Rammer-Golem, and The IronHero Saigord-Golem. His battle suit visually references the RX-78-2 Gundam. He challenges Denebola to protect Rikuto, recalling his scrap heap meeting with Rei during this confrontation, but loses the battle and the compass. Salt appears on the promotional cards "The Strongest Galaxy Ultimate Zero" and "Let's Cooking!". His deck composition is potentially identical to Manabu Ohizumi's. He is also characterized as a fan of the media personality Magical Star Saki.