One word for 'a person indifferent to pain or pleasure' (stoic)

The same question, asked 2 times: 9 Sep 2024 S2*, 17 Sep 2025 S2. Every wording below, oldest first.

Try each one first, then open its answer.

Question 1
9 Sep 2024 S2
83 $Select the option that can be used as a one-word substitute for the given group of words. One who does not show response to good or bad$
Tap an option to check your answer.
Question 2
17 Sep 2025 S2
81 $Choose the correct one-word substitute for: 'A person who is indifferent to pain or pleasure'.$
Tap an option to check your answer.