  We refer the appearance of three-dimensional (3D) multiheaded chimera states
that display cascades of self-organized spatiotemporal patterns of coexisting
coherence and incoherence. We demonstrate that number of the incoherent
chimera's domains can grow additively under appropriate varying the system
parameters generating thereby head-adding cascades of the scroll wave chimeras.
The phenomenon is derived for Kuramoto model of N identical phase oscillators
placed in the 3D cube with periodic boundary conditions, parameters are
coupling radius $r$ and phase lag $\alpha$. To obtain the multiheaded chimeras,
we perform the so-called 'cloning procedure' as follows: choose a sample
single-headed 3D chimera state, make appropriate scale transformation, and put
some number of copies of them into the unit cube. After, start numerical
simulations with slightly perturbed initial conditions for long enough time to
confirms or denies the state existence and stability. It is found, by this a
way, that multiple scroll wave chimeras including those with incoherent rolls,
Hopf links and trefoils admit this sort of multiheaded regeneration. On the
other hand, multiple 3D chimeras without spiral rotations, like coherent and
incoherent balls, tubes, crosses, and layers appear to be unstable under are
destroyed rather fast even with any small perturbations.
