Protagonist of [i][[splatoon_1|Splatoon]][/i]'s Hero Mode.

They are recruited into the [[squidbeak splatoon|New Squidbeak Splatoon]] by [[Cap'n Cuttlefish]] to help retrieve the [[zapfish]] from the underground civilization of Octo Valley.

Due to Agent 3 being the player character, they can be depicted as either gender, though they are often drawn as a girl with [[green_hair|green]] [[tentacle hair]] thanks to promotional materials surrounding Hero Mode. Regardless, Agent 3 always wears a "hero suit" consisting of a bright yellow safety vest and pointed [[headgear]].

By the time of [i][[Splatoon 3]][/i], they have succeeded Cuttlefish as the captain of the New Squidbeak Splatoon. In this game, they are now simply known as "Captain", while [[agent 3 (splatoon 3)|a new agent]] inherits their former "Agent 3" callsign. As the Captain, they wear the same [[blue headwear|blue]] [[peaked cap]] that Cuttlefish used to wear.
3号 3号(Splatoon)