Use APKPure App
Get Crazy Defense Heroes Stickers old version APK for Android
App includes Crazy Defense Heroes sticker, you can import and use in WhatsApp.
How to add stickers to your WhatsApp:
1. Install this app.
2. Select sticker pack you want.
3. Press "add to whatsapp button".
4. Open Whatsapp chat and go to emoji page. At the bottom you should see the new stickers icon.