After her marriage to Rolf Scamander, anyone who claims that Luna is 'odd' or attempts to disparage her in any way quickly learns to do otherwise.
Because (one) of her grandfathers-in-law is Percival Graves. Former head of Magical Law Enforcement at MACUSA, the man who was captured and tortured by Grindlewald himself, husband of Newt Scamander and Tina Scamander, mentor of one Mad-Eye Moody, and one of the scariest men to ever walk the face of the earth.
...also, apparently, he is almost fanatically over-protective when it comes to family.
Original!Graves/Tina/Newt, Luna Lovegood - Grandpa-in-law.
Because (one) of her grandfathers-in-law is Percival Graves. Former head of Magical Law Enforcement at MACUSA, the man who was captured and tortured by Grindlewald himself, husband of Newt Scamander and Tina Scamander, mentor of one Mad-Eye Moody, and one of the scariest men to ever walk the face of the earth.
...also, apparently, he is almost fanatically over-protective when it comes to family.