Kuai Liang

Kuai Liang, or as he's more commonly known, Sub-Zero, is the Grandmaster of the Lin Kuei Ninja Clan on a world known only as 'Earthrealm', one of many alternate Earths out there. He met Natalia when Shao Kahn damaged the Hope's Shard, forcing it to crashland in Earthrealm. Natalia aided Sub-Zero and his allies in fighting, and defeating, Shao Kahn. Afterwards, Sub-Zero set out to find the world Natalia described as her homeworld, using tech derived from the Cyber Ninja Sektor's ship to travel from world to world, finally arriving on Earth in 2237. From there, he met the Bakugan World Ninja/Ventus Brawler Shun Kazami, who was looking for a friend of his, who was supposedly transported to that world. The 2 of them helped Natalia try to fight the dragon Alduin (although it was Alice (as Masquerade) stepping in that assured Alduin's defeat). Then, the duo, with Alice, decided to join Natalia's crew.