This sprawling group of entropomancers is made up of students, dropouts, squatters and free runners who test their luck in London. Their leader is Heather, who manages to maintain some control by being relatively stable, reliable and restrained. Together the Mad Dogs are a formidable force, but they are more a loose network of friends than a true cabal.
They however do share their secrets relatively freely, meaning that their numbers grow fast. This is lucky as it allows them to replace those who are forced into inactivity by injury or death. Heather puts their numbers at around 15-20, but it's pretty constantly in flux.
The Mad Dogs are in retreat at the moment after the Circle Line claimed two of their number: Mike and Pris. This incident resulted in Lany getting a major charge, but she blew it getting revenge and trying to get Mike back. Since then the Mad Dogs have been less willing to help the Cabal directly, though they're still friendly.