Can anyone else see the relationship of the Scamander brothers being very similar to that of Mycroft and Sherlock Holmes from the BBC series? Newt worked for the Ministry of Magic for a short time, but Theseus made a career out of it as a powerful Auror.
I can just see a day when the Ministry needs the expert advice of one certain Magizoologist who has no intention of coming back to Britain at the moment. It’s up to Theseus to drag him from whatever little outpost he’s at in the middle of the night, putting up a complete fuss the entire way until he’s seated outside the Minister of Magic’s door, wrapped in nothing but his camping blankets in defiance.
Theseus: We are in the Ministry of Magic, the very heart of the wizarding British Nation. Newton Scamander, put your trousers on.