As already said, the "AND HIS NAME IS JOHN CENA" meme came from a foreign prank. It was in the "Russian Internet" that the meme began with a force in the "Any Atmta" group (exactly a year has passed, by the way) where almost every user made well-known vidos with this wrestler. In fact, John Cena is good at this meme. You can even watch this video https://www.youtube.com/watch?v=t6m6g5y1bQs And John is also a member of the Make-A-Wish Foundation and has already fulfilled the wishes of more than 400 sick children.
That's about where the meme went. As already noted, Cena is a wrestler, a positive character, but these "end heath names from" came from this telephone prank. The whole point, without being carried away by wrestling, is difficult to understand, but even despite this, the video turned out to be funny and wildly viral, after which they began to deliberately make that very phrase from it louder in order to give the effect of surprise. This is why, for the most part, Shina is so memetic.
In the past, it is worth noting that he was often forced into the United States due to the fact that he confessed his love for anime. Nya! ^^
It was rightly said that Cena is engaged in wrestling. And the meme went, as is often the case, from abroad, and, as usual, appeared from one crazy idea.
John Cena is always very funny announced: loudly and with fanfare (youtube.com). And in some strange way, this merged with his wide popularity in the United States, so people began to make jokes in which he suddenly pops up from somewhere. Another option - the audience is waiting for some character, and John Cena appears.
There are many examples on this site, as well as an attempt to explain where the meme came from: knowyourmeme.com
On Kui-TB (there is such a satellite TV channel) Wrestling was at one time. Roughly speaking, staged fights. It's a funny show, and so, he is a fighter there, with a positive hero, 1 from a few, if not 1. By the way, he is the only one remembered, and also a fighter named Viper was remembered, but not as a fighter, but as a vile character.
The wrestling itself, although staged, is quite interesting. There they fight with chairs, and stairs and 2 by 1, and a mountain against a small one and a crowd against a crowd. John Cena is not only a fighter there, but also acts in films
Unfortunately, Wrestling was removed from the air and I never saw him again, maybe transferred to some other channel, I would be glad to know which one