  The Scotogenic model is a popular scenario that induces radiative Majorana
neutrino masses and includes a weakly-interacting dark matter candidate. We
classify all possible ultraviolet extensions of the Scotogenic model in which
(i) the dark $\mathbb{Z}_2$ parity emerges at low energies after the
spontaneous breaking of a global $\rm U(1)_L$ lepton number symmetry, and (ii)
the low-energy effective theory contains a naturally small lepton number
breaking parameter, suppressed by the mass of a heavy mediator integrated out
at tree-level. We find $50$ such models and discuss two of them in detail to
illustrate our setup. We also discuss some general aspects of the phenomenology
of the models in our classification, exploring possible lepton flavor violating
signals, collider signatures and implications for dark matter. The
phenomenological prospects of these scenarios are very rich due to the presence
of additional scalar states, including a massless Goldstone boson.
