gugugaga_(meme)

A trend first started by a "MyGO!!!!! video":[https://www.bilibili.com/video/BV1ewwxesEu4/] that later gained fame in western platforms via AI-generated art (topic) featuring the Female Endministrator (arknights) from Arknights: Endfield in a penguin costume making baby noises. The penguin costume is alluded due to how the community sees the Endministrator as a penguin.