is Kylo Ren's father, then how is
Darth Vader Kylo Ren's grandfather?
Science Fiction & Fantasy Stack Exchange is a question and answer site for science fiction and fantasy enthusiasts. It only takes a minute to sign up.Sign up to join this community
Kylo Ren has two parents: Han Solo and Leia Organa.
Leia is the daughter of Anakin Skywalker/Darth Vader, making Kylo Ren the grandson of Anakin/Vader.
Leia refers to their son a number of times in conversation with Han.
He met her eyes steadily. “We’ve lost our son, forever.”
“Always,” she told him. “From the shadows, in the beginning, even before I realized what was happening, he was manipulating everything, pulling our son toward the dark side.
“If you see our son,” Leia whispered, “bring him home.”
Because Darth Vader (aka Anakin Skywalker) is Leia's father.
And Kylo Ren
Is also the son of Leia.
It takes two to tango.
A maternal grandparent is someone who is your mom's parent. Your paternal grandparents are your father's parents. Your mom's parents are your maternal grandparents.(source)
Another way of saying it is "my grandfather on my mother's side" (or maternal grandfather) vs "my grandfather on my father's side" (or paternal grandfather).
You are correct that Vader is not Kylo's paternal grandfather (as that whould be Han's dad, and Vader is not Han's dad), but Vader is still Kylo's maternal grandfather (as that would be Leia's dad, and Vader is Leia's dad1).
Here's a chart I made to help make it abundantly clear:
1 We know Vader is Leia's father from Return of the Jedi, when Luke learns that Leia is his twin sister.
LUKE: Leia's my sister!
KENOBI: Your insight serves you well.
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Would you like to answer one of these unanswered questions instead?