This is the Sploosh-o-matic 7 from the Sheldon’s Pics in Splatoon 2

Splat Bombs & Ultra Stamp.

☆ NintendObs Event – Splatoon 2 Ver. 4.6.0.

Directly to you from Twitter (in Japanese):

Source: Splatoon JP.

At NintendObserver, the comments are on Discord.

Click on Community to learn more. 🙂

…

…Wanna play? Buy a Switch.

And if you’ve already got yours, click on Splatoon 2 for everything you need to know about the game. 😀