arose, came up, appeared
Они вдруг возникли из ниоткуда.
They suddenly appeared out of nowhere.
Внезапно перед нами возникли три собаки.
Suddenly three dogs appeared in front of us.
А сейчас, у тебя возникли с этим проблемы.
And now, you're having problems with it.
— Ла-Ла Ленд (2016)