>>533767845
the train cannon probably is a reference to those fuckhuge nazi train cannons (that the writers for some reason decided to treat it as if it's basically as good as the nuclear triad in terms of power, capability, and mobility).
but her name, or at least her title, is 100% referencing Ivan IV. a.k.a. Ivan the Terrible.
it's a lot more clear if you look at JP and KR's scripts