Storm Shadow because back in the 80s, being a martial artist is the scheisse. Especially now that I have a Renegades Storm Shadow, I love him more.
Lifeline also since he's a medic (I was once involved in health care) and an aikido blackbelt. In my Joe-verse, he can go hand-to-hand with any able bodied martial artist in GIJoe.
Lowlight as well because he does resemble Tom Berenger and I liked his 'Sniper' flicks.
Helix because she's kinda like Alice in the Resident Evil movies.