Slipknot (Adam Beach)
Also known as Christopher Weiss, Slipknot is another character little known outside of the Suicide Squad source material. Like Captain Boomerang, he has no super powers of his own and instead relies on his expert-level rope usage to bring his opponents down.
At one point, Christopher Weiss invented a special coating for rope – thanks to his position working for a chemical company – which makes the fibres of the cords almost indestructible. The villain uses this to further his personal plans, with rope as his weapon of choice.