Blue Dot Christian is a character/running gag in NewLegacyInc. The gimmick came from reports of a real-life idea Vince McMahon had to put a blue dot over Christian's head whenever he came out.
The joke came from an interview with former WWE Writer Alex Greenfield which he mentioned the idea of Vince McMahon's the cover Christian's face whenever he came out. He said:
"Right before I started, there was a big show, I think it might have been in Toronto. Christian was just so completely over, and everybody thought he was going to get a push at, I think it was the World Heavyweight Championship at that point. We were on the plane one time shortly after I started, and Vince was just like "God damn, I just don't like his face. His face really bothers me." I was like, "He's ugly, Vince?" "No, it's not that he's ugly, it's just, I don't know, it's ratty! You know what we should do? That Kennedy gimmick." And we're all like, "What?" Some see-on of the Kennedy fortune I guess got arrested for rape in the 1990s at some point. When the woman who was accusing him was on the stand, all of the networks put a blue dot over her face. Vince was like, "God damn, you know what we should do? We should put a blue dot over his face whenever he comes out." It was the flight to Sheffield, England, also the flight where the Spirit Squad idea was invented. This was a whole flight of bad ideas."
The interview came just prior to NewLegacyInc's Summerslam 2013 stream where the joke became part of NewLegacyInc. On the February 3rd edition of RAW, JBL reffered to the story in Christian's match with Jack Swagger. JBL mentioned that a "blue dot would look better than Christian's face.
On the NewLegacyInc Summerslam 2013 live stream, the story was mentioned before Christian's match with Alberto Del Rio. Johnny decided to try and cover Christian's face with a blue dot during the entire match. Before the match took place, Dino actually read out the interview with Alex Greenfield about the story doing an impression of Vince McMahon during Vince's lines. Johnny predictably had a very difficult time cover Christian's face during the AI match.
This became a running gag in the NewLegacyInc which appeared again during the Money In The Bank stream, where Blue Dotted Christian became canon to that universe. Johnny tried to cover up his face during his entrance but wasn't able to cover his face during the match because he himself was Christian in the match.