The band name Hightide Era refers to both the full and brimming nature of the group's sound and also the ecological realities of the world they live in. Let's not worry too much about whether Inklings actually understand English or not, 'kay? Kay.
A double-lined fusilier, as well as the band's pianist and vocalist. He grew up with an academic background, graduating from the same school as Karen from Ink Theory, but got bored of that world and took to the streets instead. He initially played alone, singing to his own accompaniment, but was later joined by Kuze and then Nishida. Rather than being artistically motivated, he is driven by his desire to be fawned over. He does not show it on the surface, but he is actually superficial. He does not want to put a bassist in the band, as it interferes with the low notes he can hit with his left hand.
Nishida (ニシダ)
A herring, and the band's guitarist. He prefers to spend time out of the spotlight, and provides the band with a sharp, clean sound. People think he is trying to put on airs, but he does not do it nearly as much as others assume. He hails from the north, and is the youngest of 247 siblings. He has gained a solid reputation for his guitar techniques, which are written about in a serialized magazine column.
Kuze (クゼ)
A stonefish, and the band's drummer. He plays on cheap drums, which provide a powerful, albeit messy sound, though it fits well with the other members that are trying to look cool. He likes fashion, and designed the band's outfits. He plays Rainmaker in his free time with Ryū-Chang and Blow Bottom.
Their logo resembles the Japanese character "鰓" (Era), meaning "gill". This references the species of their members as well as the "Era" in their name, which is the same in the Japanese version of Splatoon.
Karen, the pianist of Ink Theory, started her band with inspiration from Hightide Era. This is also reflected in the outfits worn by both bands: Hightide Era wears mainly black with red neckties, and Ink Theory wears mainly black with gold ties.
Hightide Era and ω-3 are the only music artists with known members in the Splatoon series where none of the members are mollusks.
Gallery
Magazines at Ancho-V Games, with Hightide Era's album art at the right.
Album art of Ink Theory, with its members dressed similarly to Hightide Era.
SplatoonJP's Twitter post introducing Hightide Era
Nintendo of America's Tumblr post introducing Hightide Era
