  We investigate the Hawking energy of small surfaces in space times without
symmetry assumptions by introducing the notion of Hawking type functionals. In
particular, we find that Hawking type functionals are generalized Willmore
functionals which allows us to find area constrained, minimizing, immersed,
haunted bubble trees. These bubble trees are smooth spheres provided their area
is small enough. Following a similar analysis of the Willmore functional
conducted by T. Lamm and J. Metzger we characterize the concentration points of
area constrained, critical surfaces for Hawking type functionals and the
Hawking energy. Moreover, we determine their expansion on small surfaces.
