I believe that Hydro is the 'Sub-Zero' we see in MK3 and today we know it for Tundra, the brother of Bi-Han the original Sub-Zero. This makes me believe that it was a character project that was changed. In human form Hydro has water control powers, including its temperature, so it can freeze similar sub-zero skills. For his clothes, he is mistaken for Sub-Zero and so is killed by Scorpion. In the comics, he appears as a companion to Classic Sub-Zero (Noob Saibot) who enters Mortal Kombat. Platform: PC Language: English Crack: No crack needed Size: 2. Download Mortal Kombat Project Mugen for PC here. His only involvement is in Mortal Kombat Mugen and Mortal Kombat comics. This project made in mugen seeks to revive these old games like this so that we can play them again and enjoy them as in the old days but now with more options, powers and many characters so that the fun never ends. Hydro is a Cyborg, but it is not part of the story. So much so that in Mortal Kombat Mugen he has powers of ice and electricity. Hydro would be Sub Zero if he had not left the clan for not agreeing to the cybernetic conversion. Hydro is a character that has no part in the official history of Mortal Kombat, and is therefore a fan creation for fans. We must remember that many old HQ's were not canonical, that is, although some were licensed but not written by the creators of the series, like the old StreetFighter comics for example.