From threeA Wiki
Seven Bones, stylized "7bones," is a group of rogue Tomorrow Kings in the Popbot Universe who are the personal guard of Punk King. The 7bones figures are being released as a part of the TK Classics series.
The 7bones set is at present shrouded in mystery, though it is known that they will be a set of seven Tomorrow King figures. They will be released individually over a period of time beginning with February of 2011, "...under the CLASSIC TK line, which is a cheaper, simpler way of getting the TK."