We investigate the production of a possible pair of sequential heavy charged leptons (M-italic/sub L-italic/--200--800 GeV) at p-italicp-italic multi-TeV colliders via vector-boson fusion. The results are compared with the usual Drell-Yan mechanism and with the two-photon process. For very heavy leptons the fusion of W-italic's provides a contribution that is, at high energies, larger than the Drell-Yan mechanism.