The Servant of True Salmon Emperor Hizunamasu

A rough-tempered Salmonid with an oppositional stance towards everything, causing him to act disrespectfully towards the other members. However, his talent and reckless-yet-fitting playstyle creates an unpredictable groove that is said to show the true worth of the band's music.

ω-3's music, which plays in Salmon Run, are experimental war marches that consist of a cello, a timpani, and synthesizers, sound effects, and other percussion instruments made by the DJ. Their music is usually very frantic, relating to the chaotic nature brought upon by Salmon Run. Their songs also have quite fast tempos which change regularly. They also use a variety of time signatures and rarely use common time (4/4), which helps to add to the confusion and disorientation. Each instrument usually has a solo in each piece, where it is singled out and plays a virtuous piece of music. Strange sound effects are usually thrown into some pieces, emphasizing the strange nature of Salmon Run.

Lesser Salmonids and Boss Salmonids are members of the same species. What appearance young Salmonids will reach in maturity is determined by the environment they are raised in. Those who are raised in a harsher environment become Boss Salmonids. Steelheads and Maws have bigger bodies, while Scrappers and Steel Eels have higher intelligence. Some Boss Salmonids, such as Flyfish and Fish Sticks, consist of Lesser Salmonids that have gone through specific training. Salmonids regularly return in large numbers from their habitat to where they spawned, with the young ones doing so in order to mature, a behavior called a Salmon Run. For them, music signifies the start of such runs, and they play it to raise morale. The best performers from a tribe form a band of three to five members, and bands that are perceived as the very best earn the title "Omega". One such band, ω-3, is a notable Salmonid band whose music plays throughout runs. Additionally, the Smallfry comprising Fish Sticks sing an encouraging chant during runs. Many Salmonids use cooking utensils as weapons during battle: Chums and Cohocks use frying pans, Smallfry use spoons, Grillers are charcoal grills, Stingers use a stack of cooking pots, Flyfish and Chinooks use beverage coolers, and Slammin' Lids use pot lids and soup ladles. Salmonids are an honorable clan; fighting for their clan's pride is seen as an important value. They take care to keep their weapons in great shape. Their frying pans, as well as other weapons they wield, are passed down from generation to generation. Unlike Inklings, Salmonids do not have personal names; instead, individuals are referred to with titles based on what their tribes are known for. Salmonids' choice of weapons is due to them trying to make themselves look "tasty". It was also explained that the Salmonids are not afraid of dying and regard their death to be a cycle of life of which all life is a part.

Grillers are said to be the ultimate way of doing so by the Salmonids becoming the contents of the Griller. When the Salmonids fight to the death, they feel a sense of unity with themselves and the world. When they are eaten by other creatures, they see their death as a way of being one with the world. There are also floating food-based sculptures in the background of Salmon Run stages, which were built by the Salmonids to symbolize these beliefs. The Salmonids and the Octarians have a trade agreement with each other, in which the Salmonids provide Power Eggs used as energy sources in exchange for Octarian weapons and machinery such as Gushers and the vehicles of Slammin' Lids. However, the Salmonids do not trade their Golden Eggs as they consider them too precious.

He’s a slightly shorter Cohock(basically he’s chubby) with derpy eyes, has his hair on a single ponytail, has two piercings on his tongue (that most of the time is hanging from his mouth) and uses a black tanktop.

The Valiant Green Flame Born in Jigokudani is the timpanist, who plays with all his heart and soul. He is always facing ahead and pushing toward his goals, which is typical for his species. While he's unskilled at taking into account the feelings of others, his one-of-a-kind violent rhythm cheers up and inspires all Salmonid warriors. Appearance: He’s seemingly a weird looking Cohocock. He’s missing an eye and has big lips, wears overalls and has a ponytail.

The Firstborn Child of Alkyne, the Hidden Blade of Yakiharas is the band's cellist and composer, and its leader. He is stubborn and does not listen to anyone else nor does he recognize anything else than the most radical works. However, he has a delicate side that cares about atmosphere of a place, but he can only express these feelings via songs due to his clumsiness. Appearance: He’s a Boss salmonid, specifically a Maws, so his scales are coral colores and its big enough to kill an Inkling/Octoling in a single bite. He has a mohawk and jeans.