  Using a bottom up phenomenological approach we constructed a simple doubly
charged vector lepton $E^{\pm\pm}$ model for the possible 750 GeV diphoton
resonance $\Phi$ at the LHC assuming it to be a scalar particle. Since no
stable doubly charged leptons are seen, to facilitate their decays we complete
the model by adding a charged SM electroweak scalar $S^\pm$. $\Phi$ is a SM
singlet and can be either an inert scalar or a Higgs field. In the inert case
more than one vector lepton are required to account for the photon fusion
production of the resonance if the model is to remain perturbative. For a
Higgssed case $S^\pm$ can assist the production mechanism without using more
than one such lepton. We also found that precision measurements constrain the
couplings of $E^{\pm\pm}$ and $S^\pm$ to SM particles to be small. This raises
the possibility that they can be fairly long lived and can give rise to
displaced vertices if produced at the LHC.
