April 2016's joke for SE was a game and there was an account with the same name as it.
What was the profile URL of that account?
The 'person' you play in the game is Jon Skeet. He is well known as the highest reputation user on StackOverflow, with a total rep of > 1 million (official blog post). As such he has become one of the biggest memes on SE, even becoming the Chuck Norris of programming.
See, he was thanked in the credits:
Note that the game is not 'linked' to his account - Jon Skeet gains no rep from Unikong. (It probably wouldn't matter anyway - he hits the daily rep cap constantly without even trying, so this would make no difference.)