I study aftershock sequences and their complex spatio-temporal-magnitudinal distributions. Explaining this complexity typically requires causation mechanisms beyond coseismic elasto-static Coulomb stress change, such as dynamic triggering and postseismic processes. My work specifically centres around the mechanism of aseismic afterslip (localized, gentle, frictional sliding that occurs as readjustment of the fault-plane for months or years after the mainshock) and its potential influence on aftershock characteristics.