Okay this is how it goes...

(Great grandparents) Herobrine + Diamond Denizen = Platinum, Baxter, Laura Denizenbrine (grandparents)

(Grand parents) Laura Denizenbrine + Eren Jeager = Anthony Zane Jaeger, Shard Lugia Jaeger (parent and Auntie)

(Parents) Anthony Zane Jaeger + Kevin Rodney = Scotty Rodney Zane Jaeger (child)