Who was it? The sprite seems familiar.
Speaking of Hector, I had the beginnings of a walking animation for him:

He's missing hands (completely) because the hands were supposed to be attached to various weaponry he was to carry around.... but that never happened, so here's the WIP without hands (just 'nubs' at the end where the hands kinda would go). xD
EDIT (with critique):
Well, right off the bad I notice your Trevor uses more than the usual number of colors, and yet looks like he's not using enough colors. This is probably because of the low contrast the colors are using. You've got very nice leathery browns, grays, and greens, which would be great for a 3D model, but for a sprite, it makes it look very plain since usually a hero/main character sprite is supposed to stand out.
I would probably start using more high contrast colors like green instead of gray, and a slightly brighter brown, to bring him up. The other thing is, I'm not fond of the tuft of hair on his head. I realize it makes him look just like the artwork for CoD Trevor, but it just looks like an Afro to me in the regular 'stance' animation (his hair looks better in the attacking animations).
Lastly, there's a lot of three-color line-shading going on in some of the sprites. Line-shading is where you're just using three colors progressively getting darker, in a line, in order to create depth, but the problem is that it makes things look very amateur-ish. Specific examples are the the boot in his very first jumping sprite (sixth from the left, first row). If you notice, the boot is just three colors progressively getting darker at the bottom. Line-shading, like Pillow-shading (a similar problem but appears more in bulbous areas) is particularly apparent, here. It's not nearly as apparent in his regular stance, though. That's a pretty nice-looking stance. I might give him more of a crotch bulge though, 'cuz he's got a female crotch right now. xD Again, this is just personal preference.