When using the /summon command with ender dragons, the given rotation value of 0F, 0F, should make the Ender Dragon’s head face South, or Positive Z. If you use the given command:
/summon ender_dragon ~ ~ ~ {NoAI:1b,Rotation:[0F,0F]}
This will make the Ender Dragon’s head face the exact opposite direction, North, or Negative Z.
Environment
Minecraft Java Edition, Fabric 1.21.5. Mods, shaders, and resource packs are used, but I have also tried this on Vanilla. No mods or resource packs affect the mechanics of the Ender Dragon.
Thank you for your report!
We're tracking this issue in MC-135115, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support (Technical Issues) – 📧 Microsoft Support (Account Issues)
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki