If TwilightSparkleburst were highly electronegative, he'd be nibrogen.
If he caught Pokemon, he would catch a Broagunk.
If he were a biologist, he might study up on bromosomes.
If he were malleable, he would be a brod of metal.
I might be the Smithbronian, but TwilightSparkleburst is the sum of the collected works of art in all of Vatican City, a state in Brome.