I can't believe despite having read some Daredevil and having grown up on the Turtles, that i never realized the Foot Clan are a parody of the Hand.
In the comics they're really daredevil's villains, and the leaders talk. One of them is a dude named ten fingers because he has twenty fingers. The Foot Clan from TMNT is a parody of The Hand, and the toxic waste that made the Turtles grow is from the same spill that blinded daredevil!