An intro conversation between Liu Kang and Sub-Zero references the Mortal Kombat movie, after the latter asks "What did Kitana tell you?", Liu Kang replies "All I need is a pail of water", the method in which Liu Kang defeated Sub-Zero in the film.
In an intro conversation between Sub-Zero and Raiden, after the latter says he had a dream of a "strange and unjust world", the former will reply, "With a dark knight and a caped Wonder?", a reference to Injustice 2, in which the two appeared as DLC fighters.