BT21 Shimeji For Chrome Browser
Tata, Chimmy, Cooky, Shooky, Mang, RJ, Koya and Van play across your browser.
BT21 Shimeji is part of Shimeji Buddy, a free Chrome extension that adds small animated characters to every web page you open. Switch BT21 on and the buddy appears at the bottom of the page, walks around, climbs the sides of the window, sits on top of images and reacts when you click or drag it. It works on Google, YouTube, Reddit, your school portal and almost any other site.
What is BT21 Shimeji?
A Shimeji (しめじ) is a tiny desktop mascot that lives on the edge of your screen. The idea started as a Japanese desktop-pet program and Shimeji Buddy brings it to the browser. BT21 Shimeji is our chibi buddy inspired by BT21. It uses a hand-drawn sprite sheet with walking, climbing, falling, sitting and special animations, so it looks like a real little animation rather than a static sticker.
What BT21 does on your screen
- Cute animated BT21 characters that walk, run, climb and jump on every web page.
- Drag and drop any buddy to wherever you want on the screen.
- Click a character to trigger its special animation.
- Run one buddy or a whole crew at the same time.
- Lightweight sprite animations that will not slow down Chrome.
- Pause, hide or remove buddies with one click from the toolbar panel.
- Works on Google Chrome, Microsoft Edge, Brave and other Chromium browsers.
- 100% free, no account, no sign-up and no personal data collected.
How to add BT21 Shimeji to Chrome
- 1
Install Shimeji Buddy
Open the Chrome Web Store page, click Add to Chrome and confirm. It takes a few seconds and no account is needed.
- 2
Open the buddy panel
Click the Shimeji Buddy icon next to your address bar. Pin it from the puzzle-piece menu if you do not see it.
- 3
Switch on BT21
Find BT21 in the Chibi tab and flip the toggle. The character drops onto the page right away.
- 4
Play with it
Click BT21 for its special animation, drag it anywhere on the screen and drop it to let it walk off again. Add more buddies for a crowd.
- 5
Pause or remove
Use the same toggle to pause, or the trash icon to remove it. Buddies stay off on sites you mark as focus sites.
Need more detail? See the full install guide with screenshots and troubleshooting tips.
About BT21
BT21 is the character line created by BTS with LINE Friends. Each member designed a character: Tata, Chimmy, Cooky, Shooky, Mang, RJ and Koya, plus Van the guardian robot. BT21 Shimeji brings all eight to Chrome as chibi buddies. Cooky flexes his muscles when clicked, Koya falls asleep instantly, Shooky avoids milk and Chimmy runs everywhere with his tongue out. Run one or the full squad.
BT21 Shimeji FAQ
Are all eight BT21 characters included?
Yes. Tata, Chimmy, Cooky, Shooky, Mang, RJ, Koya and Van are all in the pack.
Does Koya sleep?
Koya's idle animation is, naturally, falling asleep wherever he stands.
Is BT21 Shimeji free?
Yes. BT21 Shimeji is completely free as part of the Shimeji Buddy Chrome extension. There is no sign-up, no subscription and no in-app purchase.
Does BT21 Shimeji slow down Chrome?
No. Each buddy is a small sprite animation that uses almost no memory. You can pause or hide it at any time from the toolbar panel.
Artists and developers making free animated Shimeji characters for Chrome since 2026. Every buddy is drawn frame by frame and tested on the latest Chrome release.
