Darkstar(Laynia Petrovna)

Darkstar is a member of the Winter Guard. A misunderstanding between Captain America's group and the Winter Guard over a power source which turned out to be the Russian Radioactive Man incited a fight between them, Red Guardian and the Winter Guard ended up working with Captain America's group when the destabilizing Russian facility they were in was about to endanger a nearby village. Afterwards, Red Guardian is the one who explained to Captain America's group that the Winter Guard are Russia's superhero team and that they work for a Russian governative organization that is the Russian counterpart of S.H.I.E.L.D.