First up is Red Jackal:

I showed him off a number of years ago, but when I got back into Joes I decided to touch up the silver and red to make them more vibrant. You can see my older, duller version in the customs section of this site.
Pretty simple custom, a 2002 Destro head onto a Funskool Cobra Commander body. That head was meant to become Red Jackal's cybernetic noggin'!
And now, Red Vulture.

Simple color matching on the body. Arms, waist and legs are from Lifeline, torso is from Crazylegs and head is from Barbecue. I think that helmet and the flak jacket torso help make him look like a driving specialist.
I'm still searching for something to customize into a Shadowtrak for him... but thus far I continue to come up short...
As for the SAS Force guys...
First up is an upgrade on Stalker:

My original one used Lightfoot arms, but I got tired of them so I replaced them with Leatherneck arms. Much like Red Jackal, my original also had very dark, dull colors, so I lightened up the green a tad to make it more visible.
Head is from a Chap Mei "Extreme Adventures" figure with the hair and beard modded, chest is a modified 83 Gung-Ho torso with an undershirt added (complete with a turtleneck to make it look like the actual Stalker toy's shirt), arms are Leatherneck's and the waist and legs are from Barbecue.
I still need to pick something to customize into his Panther. Don't want it to just be a VAMP copy...
And here's my second SAS Force guy... actually I didn't design him to join SAS Force, but with those colors how could he not?
Meet my original character, Hiryu (Japanese for Flying Dragon):

A true Frankenstein of parts, the head is a custom cast, the torso and waist are from the BJ 8-pack Wet-Suit, the arms are from Funskool Flint (themselves constructed from Blaster upper arms and 92 Roadblock lower arms), the upper legs are from Ninja Force Storm Shadow and the lower legs are from a Lamprey.
In case you can't tell from his look and his leg gear... he's a martial arts specialist.
Looking forward to hearing some feedback!