This band thing will
still be dragging on in #117? Ugh...
Longest IDW TMNT "event" arcs: City Fall, Vengeance, Trial of Krang (including Dimension X), City at War, uh... Battle of the bands?
Two old foes? One of them has to be Saki, the other's a toss-up between LeatherKrang (though wouldn't that make it
three old foes?), Rat King or Null.