James Gunn also got his brother, his brother’s wife, and their kids to appear next to his parents. And surprise, they also get mowed down by Ego the Living Planet. Gunn also used family members as aliens who also got killed in Guardians 2, so no one seems to have been left out of the fun. The filmmaker says his family enjoys dying on-screen, so maybe we will see them perish once again in a future production.
Article source: https://www.cinemablend.com/news/2573034/surprise-james-gunn-killed-off-family-guardians-of-the-galaxy-vol-2