Family Calamity
Answer: BROTHERS
Kevin Zhou (Kaz), Eric Wei

We are given a set of 8 clues. Each of the clues hints towards a two-word phrase, where the first word is a family member. This is hinted towards by the reference to "family" in the title of the puzzle.

The second words are currently put in alphabetical order, which serves as confirmation that this is correct.
Now, we can put these words into the pictures. Because the youngest group is in the back and the oldest is at the front, the TWIN clues are in the top three rows, the MOTHER clues are in the middle three, and the GRANDFATHER clues the bottom two.
Because each set of clues has each second word have a different length, the second words of the clues can be seated into the chairs uniquely. Then, we take the green letter.

The answer is thus BROTHERS.