  We present a complete nonlinear action for the dynamical system of nearly
coincident multiple D$0$-branes (mD$0$) which possesses, besides manifest
spacetime (target superspace) supersymmetry, also the worldline supersymmetry,
a counterpart of the local fermionic $\kappa$-symmetry of single D$0$-brane
(Dirichlet superparticle). The action contains an arbitrary non-vanishing
function ${\cal M}({\cal H})$ of the relative motion Hamiltonian ${\cal H}$.
The $D=10$ mD$0$ model with particular form of ${\cal M}({\cal H})$ can be
obtained by dimensional reduction from the action of eleven-dimensional
($D=11$) multiple M-wave (mM$0$) system.
