Being challenged to create my own four member Suicide Squad is daunting to say the least and as much as I love the originals, I think the following people could be some pretty big competition.
#1 Owen Davian - Mission Impossible III
You may be surprised at this but if you've seen the first 5 minutes of this movie, you'll understand my decision. No more Mr. 'let me wait for you to consider my offer' nice guy, oh no, Davian is on a whole new level of ruthless. He holds no hesitation in getting the job done and leaves you speechless when he does - an undoubted squad leader.
#2 Xenomorph - Alien
In-human strength, two mouths and corrosive acid for blood? Why WOULDN'T this inhabitant of LV-426 be apart of the new and improved suicide squad? Anything that leaves Ripley quaking in her boots has got to have something worth using. Just the sheer fear factor this beast gives out is enough for anyone to turn and run. Alien would lead the attacks as chief of intimidation and holder of pure unworldly power.
#3 Galactus: The Fantastic Four
The destroyer of worlds and entire universes? Galactus is an unstoppable force that would render any superhero speechless. Sustained by black holes and pure atoms, a force such as this flourishes on violence and is a valuable resource to any world domination plans - before he eats it that is.
#4 Keyser Soze - The Usual Suspects
This is a spoiler free zone here! If you want to know who I'm talking about, you're going to have to watch the film. Deception is key and who else could fulfill such a role as Keyser Soze? Yet another unusual asset to the Suicide Squad but a key final member none the less. Compulsive liars have nothing on Soze and their skillful impressions are something to be admired, after all, 'The greatest trick the Devil ever pulled was convincing the world he didn't exist.'
That's my suggestion, but what do you think?