  New developments in surface flux transport modeling and theory of flux
transport dynamos have given rise to the notion that certain large active
regions with anomalous properties (location, tilt angle and/or Hale/non-Hale
character) may have a major impact on the course of solar activity in
subsequent years, impacting also on the amplitude of the following solar
cycles. Here we discuss our current understanding of the role of such "rogue"
active regions in cycle-to-cycle variations of solar activity.
