Source
This most handsome fanart of him I seen so far.

5041931
I think I can one up you.

5042219 Heh...Evehly is SO GOOD, but if you want HOT ANTHRO SOMBRA, check out her other pic:

*whimper!*

5041931 Yeah! That's my peep Pixel_Spark! Give her lots of love for her Sombys, 'cause she needs the encouragement. Also, I highly recommend her Sombra fics!

I wasn't going for sexy when I commissioned this piece but judging from the comments it got on DA, that is exactly what happened.

5041931 let thine eyes gaze upon mine avatar and witness thy lords true radiance in fullest!

5041931

5041931 I disagree, I like the next one better

5042219 This is what I am talking about

Sombra is handsome because he radiates masculinity and power (IMO). To be made "sexy" he has to look strong, muscular, confident, almost like a very good looking yet evil villain. In the initial fanart, he looks like a young Mayan-inspired warrior, not his style.

Lots of good art, here.

5043563
Corrupted Twilight, Chrysalis, and... I have no idea who the purple unicorn is.

5044351
I think I largely agree with this, though as with all things it's best not to take it too far. I don't expect him to be too buff - I mean, physical strength isn't his main thing - but he'd definitely have quite a presence.

5044375 Radiant Hope, Sombra's childhood friend/love interest from the comics.

5041931

5044679 That one, for me, is handsome. Well, that and King Sombra as he appears in the show and the fanart I see (which is clopart so I can't show it).