As the fourth Apostle, Cardis might not have the raw power of the fifth or sixth Earth Apostles. His position was secured largely due to his skill at flattering and pleasing the leadership.
When he realized that the enemy appearing before them was the newly emerged demon king-level abyssal demon, Blood Butterfly, even with the indescribable terrifying pressure she exerted, Cardis felt a sense of relief. He strongly felt that the crisis had dissipated. After all, their Pop, blessed by the Goddess, had defeated the strongest abyssal demon, Higanbana.
Dealing with a newly born demon king should be effortless.