  We study information scrambling -- a spread of initially localized quantum
information into the system's many degree of freedom -- in discrete-time
quantum walks. We consider out-of-time-ordered correlators (OTOC) and
K-complexity as probe of information scrambling. The OTOC for local spin
operators in all directions has a light-cone structure which is ``shell-like''.
As the wavefront passes, the OTOC approaches to zero in the long-time limit,
showing no signature of scrambling. The introduction of spatial or temporal
disorder changes the shape of the light-cone akin to localization of
wavefuction. We formulate the K-complexity in system with discrete-time
evolution, and show that it grows linearly in discrete-time quantum walk. The
presence of disorder modifies this growth to sub-linear. Our study present
interesting case to explore many-body phenomenon in discrete-time quantum walk
using scrambling.
