Artist's description from DA:This was the second pony I noticed carrying this design after a certain brown earth pony. In a weird way, I liken this pony to myself in real life, from the hair color, his coat color (if wearing gray hoodies often counts), and his cutie mark which really to me, I only matched with loving the color green and flora in general. Of the three earth ponies I've recolored this pose to, he seems like the least common and maybe even the least known, especially after the My Little Pony page posted a picture of this pony for St. Patrick's Day this year, and judging from the masses of comments, many people had never seen this pony before and criticized him for sharing his design with a much more popular and browner pony, even though he has been around for just as long. Prior to that, people thought this pony was a ponified version of one of 's real boyfriends after his appearance with her in the Season 2 finale.
As such, my headcanon for him is mostly a null void, though he would probably be the quietest, most mature, reasonable, and perhaps even the most irritable of the three. His expression is an odd choice, being somewhat blank and in a way, describes myself.