There is an alternate universe out tehre where all the ponies appear as humans and the same thing applies to myself (or at least the one that originates from that universe). Since when the equestrian version of Smash Gamer walks through Twilight's mirror, then he will still be a pony.
The "Equestria Girls-version" of Smash Gamer is a student at Canterlot High and study in the same class as Lyra Heartstrings (who he has a crush on) and Bon Bon. He has quite average grades and not that many friends (he is standing in between Lyra and Bon Bon for height comparision). He is a lot younger than his pony-counterpart, because in my head Canon, the Equestria Girls-versions of the characters are much younger in general. Which is why they are still in high-school, while the ponies have gotten further in life.
Lyra is aware of his crush on her, but she choses to not bother with it too much. Because then she would get distracted from her studies. She and Bon Bon are only friends in this universe and not a couple. They also dislike when the other students makes claims that they are lesbians.