If you want to delete one of your avatars, you can do this by going to your Me Tab, and going to the select avatar section. Tap on the avatar you would like to delete, and you will see a trash can in the top left corner. You will be prompted to confirm the deletion.

You can also choose to be permanently deleted from the service using the GDPR delete.

Remember: Once an account has been deleted for more than 1 month, or if you chose to activate a GDPR delete, it can no longer be recovered.